Authors: Louncény Fatoumata Barry, Mouhamadou Moustapha Ndongo, Nantenin Doumbia, Mohameth Faye, Mbaye Thioub, Yakhya Cisse, Amidou Adjamou, Ansoumane Donzo, Ibrahima Sory Barry, Celebre Mualaba, Omar Thiam, Momar Code BA.
Authors: George Pieczenik.
Authors: Ibama A.S., Uzondu P.U, Amadi A.N, Ibulubo R, Timothy T.
Authors: Dyatta Mayombo K, Ipouka Doussiemou S, Nguele Ndjota, Orendo Sossa J, Oparadji JR, Mvé Ndong BF, Diallo Owono FK, Ondo N'Dong F.