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JOURNALS // Doklady Akademii Nauk // Archive

1990, Volume 311, Number 1


MATHEMATICS
On the Neumann problem for harmonic functions
A. V. Bitsadze
11
Spectral asymptotics of pseudodifferential operators
K. Kh. Boimatov
14
Classes of Stieltjes operator functions and their conservative realizations
I. N. Dovzhenko, È. R. Tsekanovskii
18
A positional method for the analysis of singular motions in extremal problems in dynamics
A. A. Melikyan
22
Generalized functionally invariant solutions of a vector equation of potential type
É. V. Nikol'skii
27
On spectrum-preserving approximation
A. M. Olevskii
32
Elliptic regularization of systems of partial differential equations of composite type
D. Kh. Safarov
36
A general boundary value problem of $(k-1)$st order for elliptic equations
A. P. Soldatov
39

CYBERNETICS AND THE REGULATION THEORY
Asymptotic invariance in problems of the control of indeterminate objects
S. V. Emel'yanov, S. K. Korovin, I. G. Mamedov, A. P. Nosov
44
Optimization of distributed resources in production systems
R. V. Skomorokhov
49

MECHANICS
Multi-mirror controllable surfaces
V. I. Bujakas
54

THEORY OF ELASTICITY
Finite deformations of elastoplastic media
A. V. Shitikov, G. I. Bykovtsev
59

GEOPHYSICS
Correlation method for the solution of the linear inverse problem of gravimetry
V. N. Strakhov
63

MATHEMATICAL PHYSICS
A method for constructing new structures of solution of exterior problems of electrodynamics for domains of complex form
V. F. Kravchenko, V. L. Rvachev, T. I. Sheiko
67

PHYSICS
Multiple scattering of charged particles in bent crystals
V. A. Muralev, N. I. Kozlov
72
Prediction, discovery and study of mass transfer under transmission of electric current in $\mathrm{Y}$$\mathrm{Ba}$$\mathrm{Cu}$$\mathrm{O}$ superconducting films at $4,2$ K
A. M. Prokhorov, Yu. M. Gufan, A. E. Krapivka, E. N. Lubnin, G. N. Mikhailova, E. G. Rudashevskiĭ, A. S. Seferov, V. N. Sumarokov, V. A. Tarasenkov, A. G. Chistov
75
Plane microondulator with rectangular grooved poles
N. V. Smolyakov
79
Conformally invariant higher spin field theories
E. S. Fradkin, V. Ya. Linetskii
83
Nonlinear effects at the absorption of surface electromagnetic waves in natural film of aluminium oxide
P. A. Shafranovsky, A. S. Prostnev, L. A. Kuzik, G. N. Zhizhin, B. R. Shub
87

CRYSTALLOGRAPHY
Molecular structure of crystalline $\mathrm{C},\mathrm{C}$-dihalogen substituted $\lambda^3$-$2,4,6$-tri-tret-butylphenylmethylenphosphines – first stable halogenphosphaalkanes
I. E. Boldeskul, I. A. Litvinov, G. N. Koidan, A. P. Marchenko, A. M. Pinchuk
113


© Steklov Math. Inst. of RAS, 2026