GRAVITATION, ASTROPHYSICS 
External fields in the gravitational collapse of rotating masses

737

The isotropization of the cosmological expansion owing to particle production

742

NUCLEI, PARTICLES, AND THEIR INTERACTIONS 
Concerning the kinetics of stimulated gamma radiation in the transient regime

748

ATOMS, SPECTRA, RADIATION 
Intershell and intersubshell effects in photoionization of atoms

752

Optical and radiative collisions

759

Determination of allowed states of a multiparticle specified for given states of the subsystems

764

On the theory of polarization phenomena in the spectroscopy of twoquantum transitions

769

Parametric relaxation resonance of optically oriented atoms in a transverse magnetic field

773

The dynamical Stark effect in diatomic molecules

775

Mixing of degenerate states of an excited hydrogen atom in longrange collisions with a charged particle

779

The acceleration of atoms by light

784

PLASMA, GASES 
Stabilization of shock instability at the expense of the inhomogeneity of the medium

791

Determination of the electron velocity distribution by the Thomson scattering method

796

A model of turbulence

798

The propagation of a nonlinear wave in a stochastic medium

802

Energy distribution of electrons in a weakly ionized currentcarrying plasma with a transverse inhomogeneity

805

Nonlinear penetration of a plasma by an electromagnetic wave and nondecay mechanisms of its energy dissipation

811

Laserinduced breakdown in air in a constant electric field

819

Selfaction of an electromagnetic wave in a plasma upon excitation of parametric instability

821

Nonlinear theory of thermonuclear Alfven instability in plasma

828

SOLIDS, LIQUIDS 
Theory of channeling effect, III. Energy losses of fast particles

832

Magnetic ordering in dilute PdFe alloys

841

A model of a disordered system (A contribution to the theory of "liquid semiconductors")

845

Propagation of laserradiation absorption waves in a transparent solid dielectric

851

Fine structure of the Rayleigh line wing and the propagation of transverse hypersound in liquids

854

Nonequilibrium state of superconductors with optical excitation of quasiparticles

862

Ferromagnetic resonance in uniaxial crystals with cylindrical domain structures

866

Mössbauer observation of radiofrequency striction of the paraprocess in invar alloys

873

On the reciprocity principle for scattering of fast charged particles by crystals

876

Determination of the sign of the g factor and observation of deformation of epitaxial films in the transverse effect of optical orientation in semiconductors

879

Investigation of the magnetic properties and NMR in spinreorientation transitions in DyFe_{0.998}Co_{0.02}O_{3} crystals

883

Frequency dependence of the conductivity of random systems near the true spectral edge

887

Magnetic dipole forces and critical dynamics of ferromagnets above the Curie point

889

Magnetic phase transition in yttrium orthovanadite

896

Oscillations of the elastic parameters of compressed matter

899

Sound absorption in an antiferromagnet in the vicinity of a spinflop field

907

Antiferromagnetic resonance in FeBO_{3}

909

Fluctuation conductivity of superconductors of the second kind above T_{c} in the presence of strong electric and magnetic fields

916

Observation of paramagnetic resonance on an Fe^{2+} ion in a CaCO_{3} lattice

920

A general method for integration of manypoint ring diagrams for Fermi systems

924
