Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences
Abstract
[Stanilov Grosio; Stanilov Grosju; Stanilov G.; Stanilov Grozio; Станилов Грозьо; Станилов Грозю]The paper is an extension of ideas and results given by G. Stanilov, F. Tricerri and L. Vanhecke
