Invited Papers. - Configuration-Based Ionic Energy Levels and Narrow Energy Bands. - Kondo Anomalies due to Rare Earth Impurity Ions. - Energy Width of the Mixed Valence State from Inelastic Neutron Scattering and Electron Tunneling. - Thermodynamical Behavior at Valence Instabilities. - Magnetic Excitations in Mixed Valent Materials. - The Phase Diagram and Some Aspects of the Substituted SmS Compounds. - A Phenomenological Model of the Phase Transition in SmS Alloys. - Valence Instabilities in Sm Compounds. - Physical Properties and Behavior of Allotropically Pure ?- ?- and ?-Ce. - Gd3+ EPR Probe of the Determination of Valence States. - Application of Disorder to Probe the Ground State of CeAl3. - Valency Changes of Ce Yb and U in Intermetallic Compounds with Ni and Cu. - Theory and Experiment on SmB6. - Theoretical Approach to the Configuration Mixing in Sm Chalcogenides. - Phase Diagram for the Kondo Lattice. - Susceptibility of the Asymmetric Anderson Model: Relevance to Valence Fluctuation Compounds. - A New Rare-Earth Impurity Model Exhibiting Mixed-Valence Behaviour. - Snafu in Mixed Valence. - Mössbauer Effect Studies of Rare Earth Mixed Valent Materials. - A Theoretical Model of Mixed Valence Electronic and Elastic Properties. - Linear Response of Intermediate Valence Compounds: Mössbauer Effect and Photoelectron Emission. - Mössbauer and XPS Studies of Europium and Samarium Mixed Valent Systems. - Magnetization along Principal Directions of TmSe at High Hydrostatic Pressures. - Low Temperature Thermal Properties of Tm-Monochalcogenides. - Observation of Localized Moments Kondo Effect Spin Glass Regime Magnetic Ordering in Rare Earth System with Unstable Valence. - Photoemission X-Ray Emission and Electron Energy Loss Spectroscopy of Mixed-Valent Compounds. - PhaseDiagram Optical and Phononic Properties of the Valence Instability of SmS. - Valence Fluctuations in Mixed Valence Compounds with Th3P4 Structure. - Experimental Studies of Narrow Band Effects in the Actinides. - Theoretical Models for Narrow Band Effects in Rare Earths and Actinides. - Epilogue. - Poster Session Papers. - Polaronic Effects on the Magnetic Susceptibility of Nonmagnetic Intermediate Valence Materials. - The Functional Integral Investigation of an Extended Friedel Anderson Model. - Anomalous Thermal Expansion of Sm1-xRxS. - A Renormalization Group Approach to the Mixed Valence Problem. - Statistical Mechanics of Intermediate Valence SmS. - Use of Standard-Basis Operators in the Configuration-Based Model of Narrow Band Solids. - Some Rare-Earth Compound Band Models Relating to Configuration Crossover and the I. C. F. Regime. - Volume Collapse in Solids. - Valencies in Lanthanide and Actinide Systems. - Configuration Shifts in Narrow Bands due to Coupling with a Broad Conduction Band. - Spin Susceptibility of Chemically Collapsed Cerium. - Effect of Additives on the Valence Transition of Cerium. - Calorimetric Studies of the ?-? Transition in Ce1-xThx. - Elastic Measurements Near a Valence Transition. - Thermoelectric Power of Cerium-Based Systems. - X-Ray Photoemission from ?- and ?-Cerium and from ?- and ?-Ce0. 731Th0. 269. - Magnetic Behavior of Ce in (Cex(Lai1-zYz)1-x)Al2: Dynamical Susceptibility and Its Relationship to Transport Properties. - Specific Heat and Magnetization Measurements under Pressure on CeAl2 and CeAl3 Compounds. - Whither Goest Thou CeAl2?. - Thermodynamic and Transport Properties of CeAl2 in Magnetic Field. - Magnetization of TmS and TmSe and the Field Induced Transition. - Hyperfine Specific Heats of TmS and TmSe. - Kondo Resistivity of TmSe and TmS downto 20 mK. - Negative Magnetoresistance Hall Effect and Field Induced Transition in the Kondo Systems TmSe and TmS. - Sample Dependent Magnetoresistance and Magnetization Anomalies in TmSe. - Pressure Studies of Rare Earth Singlet Ground State Systems. - Localized Sm Ion Collapse in SmS As. - Kondo Effect in Metallic SmS Films. - Effect of Pressure on the Resistivity and Magnetization of SmS (Sm0. 75Y0. 20Eu0. 05)S and (Sm0. 95Eu0. 05)S. - Pressure and Temperature Effects in Some Mixed Valence Systems. - Electronic Configuration of Sm2+ in SmS and SmB6 and Electrical Properties. - Intermediate Valence Properties of a Series of Ln4X3 Compounds with Anti-Th3P4 Structure. - Optical Properties of SmB6. - Low Energy Anomalies in the Optical Spectrum of SmS with Intermediate Valence. - Valence Related Optical Study of (Sm Tm) Compounds. - Metal-Semiconductor Transition in Tl2Ru2O7. - Charge Transport in NiO: An Electro-Elastic and Spin-Dependent Model for the Experiments. Language: English