1968-1969/21/3

The geometric means of an entire function

Regular solutions of a linear functional equation in the indeterminate case

On the fundamental solution of the equation ${\displaystyle {∆}^{p}u\left(X\right)+k\left(r\right)u\left(X\right)=0}$

Über die speziellen s-Vektorfelder auf den Sphären

Objets géométriques du type (1, 1, r) pour r ≥ 4

Analytic solutions of a linear functional equation

Note on the existence of periodic solutions of a second order differential equation

On a class of quasi-conformal mappings with invariant boundary points, I. The class ${\displaystyle E_Q}$ and and the general extremal problem

On a class of quasi-conformal mappings with invariant boundary points, II. Applications and generalizations