| Issue 1 | 1 | 
            
              | Article: Complete sets of compatible non selfadjoint observables | 1 | 
            
              | Article: Asymptotic expansion of the Stark-Wannier states | 11 | 
            
              | Article: Perturbative renormalization and effective Langrangians in Φ^4_4 | 32 | 
            
              | Article: Unitary time evolution for irregular external field problems | 53 | 
            
              | Article: Diffusive repair for the Ginzburg-Landau equation | 56 | 
            
              | Article: Stability of needle-crystals in the symmetric model of solidification | 93 | 
            
              | Association News: Rapport de la réunion d'automne de la SSP | 109 | 
            
              | Issue 2-3 | 131 | 
            
              | Article: Facts and fantasies in FQHE theory | 133 | 
            
              | Article: Two recent experiments on the fractional quantized Hall effect | 143 | 
            
              | Article: Edge voltages and distributed currents in the quantum Hall effect | 151 | 
            
              | Article: Edge states in the quantum Hall effect as generalized fermi surface singularities | 152 | 
            
              | Article: Surface acoustic wave studies of the fractional quantum Hall regime | 153 | 
            
              | Article: Quantum Hall effect without Landau quantization | 164 | 
            
              | Article: Theories of superconductivity (a few remarks) | 173 | 
            
              | Article: Two-dimensional superconductivity in ultrathin disordered thin films | 187 | 
            
              | Article: Quenching of superconductivity in disordered thin films by phase fluctuations | 197 | 
            
              | Article: Superconductivity in quasi-two-dimensional systems : theoretical aspects | 205 | 
            
              | Article: Superlattices of hits cuprates : investigations of 2D ultrathin layers and the crossover to 3D anisotropic films | 215 | 
            
              | Article: Anyons in the quantized Hall effect and in models of high temperature superconductors | 218 | 
            
              | Article: Josephson junction arrays and superconducting wire networks | 219 | 
            
              | Article: Charge-vortex duality in Josephson junction arrays | 228 | 
            
              | Article: The flux-phase problem on planar lattices | 247 | 
            
              | Article: SO(4) symmetry of the Hubbard model and its experimantal consequences | 256 | 
            
              | Article: Quantum-Monte-Carlo studies of superconductivity in strongly correlated systems | 257 | 
            
              | Article: Exact diagonalization studies of 2D quantum models | 268 | 
            
              | Article: Quantum Monte Carlo simulations : algorithms, limitations and applications | 278 | 
            
              | Article: Conformal field theory and statistical mechanics | 289 | 
            
              | Article: Mathematical survey of some two dimensional dynamical systems | 290 | 
            
              | Article: Statistical mechanics on a 2D-random surface | 291 | 
            
              | Article: Experiments on melting in classical and quantum two dimensional electron systems | 297 | 
            
              | Article: After-dinner speech on board the ship "Ville de Neuchâtel" | 307 | 
            
              | Article: Point-contact spectroscopy on tunable constrictions in GaAs | 313 | 
            
              | Article: Violation of Ehrenfest's theorem in particle dynamics of quantum Hall systems | 315 | 
            
              | Article: Multifractality and scaling in disordered 2-D Landau levels | 317 | 
            
              | Article: Hysteresis effects in mesoscopic rings in the quantum Hall regime | 319 | 
            
              | Article: Quantum fluctuations in the transmission of a ballistic metallic constriction | 321 | 
            
              | Article: Excitonic recombination of Donor bound excitons in selectively doped MQW under high magnetic fields | 323 | 
            
              | Article: The magnetoconductance of the 2d systems of electrons on liquid helium in the extreme quantum limit | 325 | 
            
              | Article: Quenching of the Hall effect in two dimensional narrow systems | 327 | 
            
              | Article: Exchange and polariton effects for excitons in Al_1-xGa_xAs-GaAs quantum wells | 329 | 
            
              | Article: Imaging the current distribution in the quantum Hall effect | 331 | 
            
              | Article: Electron phonon interactions in a disordered 2d electron gas in a magnetic field | 333 | 
            
              | Article: Coulomb blockade in a 2d electron gas | 335 | 
            
              | Article: Incompressible quantum liquid versus two-dimensional electron solid | 337 | 
            
              | Article: Two-dimensional channel from Ga_0.65Al_0.35As-GaAs undoped heterojunction | 339 | 
            
              | Article: The role of edge currents in dissipative transport at strong magnetic fields | 341 | 
            
              | Article: Resonant Raman scattering in quantum wells under high magnetic fields | 343 | 
            
              | Article: FQHE in the disk geometry : exact diagonalization for few electrons and extrapolation to the bulk limit | 345 | 
            
              | Article: Determination of electron exchange energy in a 2DES by nuclear magnetic relaxation | 347 | 
            
              | Article: On the theory of kinetic properties of perfect two-dimensional conducting systems | 349 | 
            
              | Article: Hydrodynamic effects in electric conductivity of two dimensional metals | 351 | 
            
              | Article: Magnetotransport in 2D system in parallel and tilted magnetic fields | 353 | 
            
              | Article: Theory of 2D conductivity in almost parallel magnetic fields : the role of the third dimension | 355 | 
            
              | Article: Current dependence of the Shubnikov-de Haas peaks in GaAs - Al_xGa_1-xAs heterostructures | 357 | 
            
              | Article: Non-locality of the gapless plasma excitations in the QHE | 359 | 
            
              | Article: Universal dependence of eigenvectors of tight-binding models on Bloch momenta | 361 | 
            
              | Article: Plasmaron excitation in a 2D electron gas | 363 | 
            
              | Article: Magnetically catalyzed superconductivity in 2D | 367 | 
            
              | Article: What symmetry is broken in the superconductor - normal phase transition? | 369 | 
            
              | Article: The effects of inherent bond disorder on the rf properties of SNS Josephson junction arrays | 371 | 
            
              | Article: Self-field effects and subharmonic Shapiro steps in Josephson junction arrays | 373 | 
            
              | Article: Vortex motion in type II superconductors of reduced dimensionality | 375 | 
            
              | Article: Charge dynamics in junction arrays | 379 | 
            
              | Article: Quantum phase transitions in Josephson junction arrays | 381 | 
            
              | Article: Propagating vortex beams in Josephson-junction arrays | 383 | 
            
              | Article: Observing an Ising transition in Josephson-junction arrays | 385 | 
            
              | Article: Optical response of CuO_2-plane and CuO-chain in YBaCuO | 387 | 
            
              | Article: Zero applied force magnetic flux noise in Josephson junction arrays | 389 | 
            
              | Article: Vortex dynamics in superconducting fractal networks | 391 | 
            
              | Article: Two-dimensional electron localization in bulk single crystals of Bi_2Sr_2Ca_1-xY_xCu_2O_8 | 393 | 
            
              | Article: Giant tunneling anisotropy of a high temperature superconductor | 395 | 
            
              | Article: Imaging the current density in superconducting thin films | 397 | 
            
              | Article: Flux creep : the stochastic approach | 399 | 
            
              | Article: Temperature dependence of critical current and activation energy due to layered structure in oxide superconductors | 402 | 
            
              | Article: 2D de Haas-van Alphen effect in the superconducting state | 404 | 
            
              | Article: Experimental investigation of two-dimensional arrays of ultrasmall Josephson junctions | 406 | 
            
              | Article: Crossover from three- to two-dimensional behavior of the vortex energies in layered XY-models for high T_c superconductors | 408 | 
            
              | Article: Nonperturbatively renormalizable quantum field theories in 2+1 dimensions | 411 | 
            
              | Article: Anharmonic phonons and electronic correlations in high-T_c superconductors : a quantum Monte Carlo study | 413 | 
            
              | Article: Corrections to fermi liquid behaviour in D=2 : DOS | 415 | 
            
              | Article: Monte Carlo simulation of the 1D-quantum roughening model : evidence of a KTB transition | 417 | 
            
              | Article: Dynamics of spin and charge fluctuations in a t-J model | 419 | 
            
              | Article: Dynamics of charge carriers in 2-D quantum antiferromagnets | 421 | 
            
              | Article: Slave Boson approach to magnetic order in the Hubbard model | 423 | 
            
              | Article: Critical behaviour at the metal-insulator transition in 2D systems with spin orbit scattering | 425 | 
            
              | Article: SO(3)-σ model of doped two-dimensional spin 1/2 Heisenberg antiferromagnet | 427 | 
            
              | Article: Order and fluctuations in coupled XY planes | 429 | 
            
              | Article: Single-particle spectrum for high-T_c superconductors : a numerical study | 431 | 
            
              | Article: Conserving approximation for the multi-band Hubbard model | 433 | 
            
              | Article: Finite-size effects in the negative U Hubbard model | 435 | 
            
              | Article: Ground state phase diagram of the two-dimensional Kondo lattice | 437 | 
            
              | Article: Numerical study of a projected Hubbard model | 439 | 
            
              | Article: The phase diagram of the Haldane chain mapped onto the surface roughening problem | 441 | 
            
              | Article: Lyapunov exponents of the Schrödinger equation with quasi-periodic potential on a strip | 443 | 
            
              | Article: Singular dynamics of a fermion coupled to the planar antiferromagnet | 446 | 
            
              | Article: Antiferromagnets in 2 + ε dimensions | 448 | 
            
              | Article: Superconductivity of the mixed s and d-type symmetry in the t-J model | 450 | 
            
              | Article: The hole excitation spectrum in CuO_2 plane | 452 | 
            
              | Article: Magnetic properties of the Hubbard model with infinite interaction | 454 | 
            
              | Article: Resonance (surface) phonon transport through point contacts | 456 | 
            
              | Article: Low temperature properties of two dimensional frustrated quantum antiferromagnets | 458 | 
            
              | Article: Kinetic roughening in molecular-beam epitaxy | 463 | 
            
              | Article: Two-dimensional spin systems in a magnetic field close to criticality | 465 | 
            
              | Article: Vortex and domain wall dynamics of 2d-XY model with in-plane magnetic field | 467 | 
            
              | Article: Jones polynomial and the Potts model | 469 | 
            
              | Article: Dynamics of defects near melting of classical 2D electrons | 471 | 
            
              | Article: Two-dimensional melting of hexatic magnetic bubble arrays | 473 | 
            
              | Article: Statistical properties of 2D periodic Lorentz gas with infinite horizon | 475 | 
            
              | Article: Is the Kosterlitz-Thouless transition 'exotic'? | 477 | 
            
              | Article: Vortices : collective variables for turbulence in Josephson arrays | 479 | 
            
              | Article: Frustrated XY model : continuity of the ground state energy in function of the frustration | 482 | 
            
              | Article: Crossover from two to three dimensions in the layered xy-model | 484 | 
            
              | Article: High resolution photoemission investigation of phase transitions in 1T-TaS_2 | 486 | 
            
              | Article: Superconducting vortices and the two-dimensional electron gas | 488 | 
            
              | Article: One electron dimple on a thin helium film | 490 | 
            
              | Article: Destruction of superconductivity in Josephson junction arrays by positional disorder | 492 | 
            
              | Article: Chaotic dynamics of fluxons in large-area Josephson junctions | 494 | 
            
              | Article: Soliton mechanism of optical anisotropy photoinduction in layered molecular structures | 497 | 
            
              | Article: Vortex corrections to the SCHA in the 2D-XY model | 499 | 
            
              | Article: Long-time dynamics of two-dimensional fluid binary mixture in cellular automata models | 501 | 
            
              | Index: Index of authors | 503 | 
            
              | Issue 4 | 505 | 
            
              | Article: Subordinacy and spectral theory for infinite matrices | 505 | 
            
              | Article: Perturbation theory for time dependent hamiltonians : rigorous reduction theory | 528 | 
            
              | Article: Heisenberg antiferromagnet on triangulated trees | 560 | 
            
              | Article: Critical points of the "entropy"-like functional for the quantum distribution functions | 596 | 
            
              | Article: Antinucleon-nucleon scattering formalism and possible tests of CPT invariance | 611 | 
            
              | Issue 5 | 641 | 
            
              | Article: Classical theories, atomicity and nonclassical theories | 641 | 
            
              | Article: Finite temperature Schwinger model | 652 | 
            
              | Article: An infinite volume expansion for many fermion Green's functions | 679 | 
            
              | Article: Approximation semi-classique du propagateur d'un système électromagnétique et phénomène de Aharonov-Bohm | 722 | 
            
              | Article: Semiclassical expansions of the thermodynamic limit for a Schrödinger equation. II, The double well case | 748 | 
            
              | Issue 6 | 767 | 
            
              | Article: Instability of SU(2) Einstein-Yang-Mills solitons and non-abelian black holes | 767 | 
            
              | Association News: Rapport de la réunion d'automne de la SSP | 820 | 
            
              | Issue 7 | 887 | 
            
              | Article: Complete sets of commuting observables and irreducible sets of observables | 887 | 
            
              | Article: A Lorentz covariant description of the classical radiation field | 898 | 
            
              | Article: On the description of single massless quantum objects | 910 | 
            
              | Article: Michel's theorem and critical sections of gauge functionals | 922 | 
            
              | Article: First order coherent Boson states | 965 | 
            
              | Article: Diffusion in the kicked quantum rotator by random corrections to a linear and sine field | 985 | 
            
              | Issue 8 | 993 | 
            
              | Article: Chiral current algebras in three-dimensional BF-theory with boundary | 993 | 
            
              | Article: Fierz transformation and dimensional regularization | 1011 | 
            
              | Article: Local dynamics of mean-field quantum systems | 1016 | 
            
              | Article: Defining relative energies for the projected Ising measure | 1055 | 
            
              | Article: Algebraic treatment of the Morse potential | 1069 | 
            
              | Article: Résonances pour l'opérateur de DIRAC-II | 1077 | 
            
              | Article: On the definition of time delay in scattering theory | 1119 | 
            
              | Table of Contents | 1127 | 
            
              | Index: Index of authors = Autorenregister = Table des auteurs | 1135 |