AUTOMORPHlSM GROUP OF THE UNIT DISK IzI<0
SPHERICAL AND CIRCULAR VISCOELASTIC INCLUSIONS
STANDARD ERROR FRACTIONAL FUNCTIONAL PROGRAMMING
Note sur le Continu de l'Atlas d'Utrecht au-dessous de 4000 Å.
Observations des taches solaires en 1964
ON THE MAKSIMUM TERM, ORDER AND TYPE OF THE FUNCTION DEFINED BY THE SERIES
Observations de la chromosphere solaire en 1960-63
CONVEX FUNCTIONS AND THEIR APPLICATIONS