GRAVITATION, ASTROPHYSICS 
The early stages of evolution of spatially nonhomogeneous models of the Univene

785

NUCLEI, PARTICLES, AND THEIR INTERACTION 
Investigation of transitions between orthohydrogen and parahydrogen for detecting parity violation in the weak interaction

801

Radiative corrections to the vertex form factors in the twodimensional approximation of quantum electrodynamics

809

ATOMS, SPECTRA, RADIATION 
Investigation of SF_{6} molecule absorption in a wide range of infraredlaser intensity

816

Collective radiative effects in a twolevel system

829

Vibrationalrotational excitation of polar molecular ions by charged particles

843

Exchange interaction of an atom with a multiply charged ion

858

Stimulated photoassociation in the field of an intense electromagnetic wave

867

Quasiclassical theory of direct chemical reactions in rapid collisions

872

Method of pseudocoherent states in nonlinear quantum systems

884

Phasing of atomic velocities in the field of a traveling electromagnetic wave

899

PLASMA, GASES 
Excitation of ion oscillations by a freely propagating electron beam

909

Anomalous absorption of microwave radiation by a plasma in the electron cyclotron band

918

Thermal runaway and convective heat transport by fast electrons in a plasma

933

SOLIDS, LIQUIDS 
Ba IBa II phase boundary and the maximum on the melting curve of Bal at high pressures

946

Investigation of metastable current states in superconducting AI, Sn, and In films

952

Resonance between dipole oscillations of atoms and interference modes in crystalline films

968

Dislocationstate spectrum of plastically deformed ngermanium

975

Tunnel transparency of disordered systems

989

Phase transitions of the second kind in crystals containing dislocations

1017

Deformationpotential operator for a screw dislocation

1032

Calculation of critical exponents by quantum field theory methods

1035

Oscillation of the conductivity of carriers with anistropic energy spectrum in a quantizing magnetic field

1046

Highfrequency properties of ErFeO_{3} in the ordering region of rareearth systems

1058

Electron structure and distribution function of localized states in the Anderson model. The dielectric phase

1062

Theory of the magnetic properties of dysprosium orthoferrite

1076

Magnetic hyperfine interaction for Co impurity atoms in a PdAu matrix

1087

Kinetics of decay of metastable polarized crystals

1093

Magnetic oscillations of the momentum distribution of hot photoexcited electrons in semiconductors

1107

Change of phonon energy in germanium at pressures up to 3 GPa

1119

Auxiliary surface polaritons in the region of resonance with oscillations in a transition layer

1124

Differential conductivity of semiconductors with inelastic scattering of electrons

1134

Current fluctuations In a strong electric field under conditions of frequent interelectron collisions that ensure a Maxwellian distribution with drift

1144

Paramagnetic limit of superconductors with dielectric gap on the Fermi surface

1157

Investigation of the effect of surface scattering of electrons on the radiofrequency size effect in tungsten

1167

Effect of surface waves on the reflection of sound by a rough surface

1175

Cyclotron resonance in metals in weak magnetic fields

1183

New approach to the theory of the dielectric constant of a system of interacting electrons

1197

Acoustic satellites of helicon resonance

1207

Effect of linear defects on the local magnetization of a plane Ising lattice

1217
