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Eunice O. Adeparusi and Abiola Komolafe
Amin Ismail and Chew Lye Yee
P.D. Mbougueng, D. Tenin and J. Scher
Samia M. Abdel Rahaman , Isam A. Mohamed Ahmed , Elfadil E. Babiker and Salah A. Mahgoub
Ainong Yu and Baoguo Sun
Gammaa A. Osman , A.I. Mustafa and A.O. Abdelbagi
Gammaa Abdelgadir Osman , A.H. ElTinay and Elyamen .F. Mohamed
Musleh Uddin and Emiko Okazaki
Ahmet Ayar , Durmus Sert , I. Hakki Kalyoncu and Fehmi Yazici
T.U. Nwabueze and M.O. Iwe
Renata Passos , Rui Mendes , Beatriz Nobre and Luisa Gouveia
Nwabueze, T.U.
T.N. Fagbemi, A.A. Oshodi and K.O. Ipinmoroti
J.J. Essia Ngang , C.P. Kouebou , T. Dzudie and F-X Etoa
D. Mota-Rojas , ADL.Reyes , M. Becerril-Herrera , S. Flores-Pintado , M. Alonso-Spilsbury , L.A.Cardona and C. Lemus-Flores
Souto E.B.