MATHEMATICAL PHYSICS

P. P. Mosolov, V. P. Miasnikov. Rectilinear motions of ideally plastic medium . . . 541

PHYSICS

E. I. Adirovich, V. M. Rubinov, Iu. M. Iuabov. APHV-effect in monochromatic light . . . 545

T. S. Altshuler. ESR in glass containing rare-earth elements . . . 549

I. G. Berzina, I. B. Berman. Identification of etching figures on fission-fragment tracks in ionic crystals . . . 553

I. A. Viktorov. Interaction of ultrasonic surface and volume waves with conduction electrons in CdS crystals . . . 556

V. V. Vladimirov. Relation between Bohm’s criterion and the generation of “ambipolar” sound in the plasma of the positive column of a gas discharge . . . 560

V. K. Egerev. Operational method of determining certain integral characteristics of non-stationary transfer processes in active media . . . 564

TECHNICAL PHYSICS

N. P. Levenets, G. A. Lopukhov, A. M. Samarin. Reaction zone temperature when iron melts are blown by oxygen gas mixtures and air . . . 566

N. N. Sirota, E. A. Ovseichuk. Superconduction properties of vanadium and niobium alloys . . . 570

J. B. Fridman, T. K. Zilova, N. I. Novosiltseva. Failure kinetics in two-axial tension . . . 572

GEOPHYSICS

M. Hochberg, R. Gendrin, S. Lacourly, O. Malevskaia, V. Troitskaia. Polarization of Pc-1 (pearltype) hydromagnetic emissions at magnetically conjugate Sorga (USSR) — Kerguelen (France) points . . . 576

B. P. Konstantinov, M. M. Bredov, E. P. Mazets. Experimental evidence against the earth’s dust cloud hypothesis . . . 580

O. I. Iakovlev, A. I. Efimov. Investigation of metre-radiowave reflections by the moon’s surface . . . 583

CRYSTALLOGRAPHY

G. V. Kleshchev, I. V. Kabanovich, L. N. Chernyi. On the nature of the optical inhomogeneity of quartz . . . 585

ERRATUM

In my paper (V. R. Portnov, “A theorem on the density of a set of finite functions in weight classes”), published in DAN, vol. 160, no. 3, 1965, the following corrections must be made:

On p. 546, line 12, instead of \(\gamma^{(l,k)} - rp + 1\) there should be \(\gamma^{(l,k)} - rp + q_k\).

On p. 546, between the definition and Theorem 1, the following paragraph should be inserted:

Below we shall consider only those \(L_{p,b}^{(\vec{\alpha})}(\Omega)\) for which from \(u(x) \in \overset{0}{L}{}_{p,b}^{(\vec{\alpha})}(\Omega)\) it follows that \(u(x)\psi(\tilde{x}_1) \in \overset{0}{L}{}_{p,b}^{(\vec{\alpha})}(\Omega)\) for any function \(\psi(\tilde{x}_1)\) with derivatives bounded up to order \(\max_l m^{(1,l)}\), and such that \(\psi(\tilde{x}_1) = 1\) outside some ball.

V. R. Portnov

ERRATUM

In my paper (M. A. Naimark, “An analogue of Stone’s theorem in a space with an indefinite metric”), published in DAN, vol. 170, no. 6, 1966, the note in the proof on p. 1261 should be replaced by the following:

As has become known to the author, Theorem 2 was formulated by M. G. Krein \((^6)\) (the formulation was not published) in his report at the IV All-Union Mathematical Congress, and its first assertion was proved by Shah Tao-shing \((^7)\). M. G. Krein kindly informed the author that an assertion close to the first assertion of Theorem 1 is contained in the unpublished dissertation of G. Langer (Dresden).