Volume 6, Issue 1, January 2012, Pages 313-322
E.O. Okuku; H.K. Peter
Volume 5, Issue 4, September 2011, Pages 865-874
E.O. Okuku; B. Ohowa; S.N. Mwangi; D. Munga; L.I. Kiteresi; V.O. Wanjeri; S. Okumu; J. Kilonzo