Volume 16, Issue 1, January–March, 1982
In this issue (24 articles)

OriginalPaper
The complex exponent of a singularity does not change along strataµ = const
A. N. Varchenko Pages 19 
OriginalPaper
Rational solutions for the equation of commutation of differential operators
P. G. Grinevich Pages 1519 
OriginalPaper
Spectral theory of commuting operators of rank two with periodic coefficients
S. P. Novikov, P. G. Grinevich Pages 1920 
OriginalPaper
Real twozone solutions of the sineGordon equation
B. A. Dubrovin, S. M. Natanzon Pages 2133 
Brief Communications
Triangular representations of operators with unitary spectrum
N. I. Baranov, M. S. Brodskii Pages 4546 
Brief Communications
Interpolation of quasilinear operators and inequalities for entire functions in symmetric spaces
M. Z. Berkolaiko Pages 4748 
Brief Communications
Existence of surface conditions for nonclassical selfadjoint extensions of the Laplace operator
M. M. Gekhtman Pages 4951 
Brief Communications
One description of the selfdual solutions of the Einstein equation with a cosmological term
S. G. Gindikin Pages 5153 
Brief Communications
Fast decreasing functions and characters of real algebraic groups
V. A. Ginzburg Pages 5355 
Brief Communications
Almostinvariant properties of analytic operator families
Yu. P. Ginzburg Pages 5556 
Brief Communications
Spectrum, adjoining the real axis, in a problem of elasticity theory
A. M. Gomilko Pages 5758 
Brief Communications
Classification of evolution equations by conservation laws
O. V. Kaptsov Pages 5961 
Brief Communications
Description of regular extensions of Hermitian operators
A. V. Kuzhel’, L. I. Rudenko Pages 6162 
Brief Communications
Irreducible representations of Lie superalgebras of vector fields and invariant differential operators
D. A. Leites Pages 6264 
Brief Communications
Nullgeodesics of complex Einstein spaces
Yu. I. Manin, I. B. Penkov Pages 6466 
Brief Communications
Integration of the nonlinear twodimensional spatial Schrodinger equation by the inverseproblem method
L. P. Nizhnik, M. D. Pochinaiko Pages 6669 
Brief Communications
Normal oscillations of a viscous liquid partly filling an elastic vessel
M. B. Orazov Pages 6970
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