Volume 6, No. 1 (1970)

Iterated Hyperbolic Mixed Problems

Iterated Hyperbolic Mixed Problems Fourth Order Elliptic Equations

Formula Manipulations Solving Linear Ordinary Differential Equations (I)

Holomorphic Extension Problem for Standard Real Submanifolds of Second Kind

Corrections to "Finiteness of the Number of Discrete Eigenvalues of the Schrodinger Operator for a Three Particle System"

Finiteness of the Number of Discrete Eigenvalues of the Schrodinger Operator for a Three Particle System

On the Existence of the Discrete Eigenvalue of the Schrödinger Operator for the Negative Hydrogen Ion