A THEOREM ON n-DIMENSIONAL LAPLACE TRANSFORMATIONS
A new method for the determination of colour-indices of the cluster stars
HOMOGENEOUS NON-STATIC SOLUTIONS OF EINSTEIN-MAXWELL FIELD-EQUATIONS FOR AN ISOTROPIC SPACE-TIME
SUR L' ARGUMENT DES FONCTIONS UNIVALENTES
L'etude spectrale de l'etoile HD 217 050
ON THE MEAN VALUES OP INTEGRAL FUNCTIONS