Genetic differentiation in cassava (Manihot esculenta) land races as assessed by simple sequence repeat (SSR) markers - Fregene, Martin A.; Suárez, M; Mkumbira, J.; Kulembeka, H.P.; Ndedya, E; Kulaya, A; Mitchel, S; Gullberg, U.; Rosling, H.; Dixon, Alfred G.O.; Kresovich, Stephen (Cassava Biotechnology Network (CBN), 2002)