Pr J. C. Chabi Orou, Institut de Mathématiques et de Sciences Physiques (Benin). Pr R. A. Kraenkel, Institute of Theoretical Physcis, UNES, San Paulo, (Brazil) .

Pr J. A. Sepulchre, Institut Non Linéaire de Nice, (France). jacques-alexandre.sepulchre@inln.cnrs.fr

Dr Y. Chembo Kouomou, ckyanne@yahoo.fr, ckyanne@lamsebp.org

Dr H. G. Enjieu Kadji , Tohoku University, Sendai, Japan, henjieu@lamsebp.org http://henjieu.googlepages.com/

Dr R. Tindjong,Research Associate, Lancaster University, UK,r.tindjong@lamsebp.org

Dr B. Nana, bnana@lamsebp.org,na1bo@yahoo.fr

Dr Kitio Kwuimy Cédrick Aurelien, kwuimy@lamsebp.org , kwumy@yahoo.fr

R. Ntchantcho, rntchantcho@lamsebp.org
Kepseu Djampouop Wilfred, wkepseu@lamsebp.org
Dr M. Siewe Siewe, martinsiewe@yahoo.fr, University of Yaounde 1
Dr. Taffoti Yolong Vicky Yolande, vtaffoti@lamsebp.org