Izv. Akad. Nauk SSSR Ser. Mat., 1968, Volume 32, Issue 4

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1968, Volume 32, Issue 4

	Some classes of meromorphic functions characterized by their spherical derivative V. I. Gavrilov		735
	An energy inequality and the overdeterminacy property of a system of eigenfunctions V. I. Plotnikov		743
	Linear summability methods for expansions of functions in the classes $L^p_\mu$ $(1\leqslant p\leqslant\infty)$ in orthonormal systems of polynomial type B. P. Osilenker		756
	On the decrease of harmonic functions of three variables in a solid of revolution I. S. Arshon		772
	The approximation of functions by algebraic polynomials Yu. A. Brudnyi		780
	On the successive derivatives of functions in a quasianalytic class G. V. Badalyan		788
	On the property of being Frobenius of the semigroup algebra of a finite commutative semigroup I. S. Ponizovskii		820
	On functions of bounded $p$-variation B. I. Golubov		837
	A generalization of Esseen's inequality and its application in probabilistic number theory A. S. Fainleib		859
	Three sequences of formulas with two variables in the positive propositional logic V. A. Yankov		880
	The construction of asymptotic solutions of certain problems involving parameters S. A. Lomov		884
	A local criterion for the existence of wave operators M. Sh. Birman		914
	On the tautness of rationally contractible curves on a surface G. N. Tyurina		943
	Defining relations and the word problem for free periodic groups of odd order P. S. Novikov, S. I. Adian		971