V. A. Kondratiev, S. D. Eidelman. On the character of solutions to linear evolutionary systems with elliptic space part — 468

S. L. Krushkal. A contribution to the study of the dependence of holomorphic differentials on the moduli of Riemannian surfaces — 472

I. I. Marnershtein. Boundedness of solutions to some systems of linear partial difference equations — 475

A. I. Perov, T. K. Katsaran. Non-linear multidimensional differential equations — 479

S. G. Samko. On closed-form solvability of singular integral equations — 483

L. S. Frank. Hyperbolic difference operators — 486

L. L. Tsinman. Certain algorithms in a formal arithmetical system — 489

M. I. Eskin. Boundary value probleme for the redefined system of two second-order equations — 491

CYBERNETICS AND THE REGULATION THEORY

V. A. Iakubovich. Finitely converging algorithms of solution to enumerable systems of inequalities and their application to problems of adaptive system synthesis — 495

PHYSICS

Iu. K. Alekhin. Surface wave arising near a rough interface between two media — 499

E. A. Arinstein. The asymptotic behaviour of correlation functions in a critical region — 502

V. L. Bonch-Bruevich. Interzonal transitions in non-ordered systems with slowly varying random field — 505

L. L. Buishvili, N. P. Giorgadze. A contribution to quantum-statistical theory of spin diffusion — 508

V. A. Voloshin, A. A. Galkin, A. I. Savutskii. Decrease of luminescence decay time constant of europium benzoyl acetate under the influence of all-round compression — 511

V. N. Erofeev, V. I. Nikitenko, V. B. Osvenskii. Effect of impurities on overcoming of high Peierls barriers by dislocations — 513

L. V. Iogansen, F. A. Uvarov. Search for lower collective electron excitations in the benzene ring — 516

A. V. Kulemin, A. M. Mitskevich. Diffusion in the Cu—Zn system under sign variable deformations — 518

O. M. Todes. Fluctuation kinetics and the determination of kinetic coefficients — 521

TECHNICAL PHYSICS

I. A. Dobrushina, M. R. Spasskii, I. G. Shatalova, E. D. Shchukin. Kinetics of the vibrational densification of tungsten powder — 525

L. I. Mirkin. Plastic deformation of metals under the influence of a laser light impulse of \(10^{-8}\) sec. duration — 528

CRYSTALLOGRAPHY

D. P. Shashkin, M. A. Simonov, N. V. Belov. Crystalline structure of uralborite \(\mathrm{Ca_2[B_4O_4(OH)_8]}\) — 532

CORRECTIONS

In the article by S. P. Pekar, “High-pressure chemical lasers and light-stimulated chemical reactions,” published in DAN, Vol. 187, No. 3, 1969, on p. 556, line 28, the printed \(n^{-3}\) should read \(n^{-2}\).

In the article by A. D. Sidorenko, “Wave adiabats for media with an arbitrary equation of state,” published in DAN, Vol. 178, No. 4, 1968, on p. 820, line 9, the printed

\[ (\partial P/\partial V)_S=(P-P_0)(V-V_0), \]

should read

\[ (\partial P/\partial V)_S=(P-P_0)/(V-V_0); \]

on p. 821, line 14, the printed

\[ \int_0^T c_v\big|_{v=\mathrm{const}}\,dT < 2aT, \]

should read

\[ \int_0^T c_v\big|_{v=\mathrm{const}}\,dt < 2c_vT. \]

Submitted for typesetting 2/IX-1969. T. 14943. Signed for printing 20/X-1969. Print run 1470 copies.

Order 2776. Paper format \(70\times108^{1/16}\). Printed sheets 21.35 + 3 inserts. Paper sheets \(7^{5}/8\). Accounting-publishing sheets 21.0.

2nd printing house of the publishing house “Nauka,” Moscow, Shubinskii Lane, 10.