1. Faculty of Sciences Semlalia, LMDP, UMMISCO (IRD-UPMC), Cadi Ayyad University, Marrakesh, Morocco
2. Graduate School of Mathematical Sciences, The University of Tokyo, Tokyo, Japan
3. Honorary Member of Academy of Romanian Scientists, Bucuresti, Romania
4. Correspondence Member of Accademia Peloritana dei Pericolanti, Palazzo Università, Messina, Italy