M.Sc. Project on Kenya's Domestic Export. .. : EM Ngatia, LW Gathece, FG Macigo, TK Mulli, LN Mutara, EG Wagaiyu. Abstract

Submitted. Deletion Designs. Journal of Science and Technology, 7, (2002), 323-332. : EM Ngatia, LW Gathece, FG Macigo, TK Mulli, LN Mutara, EG Wagaiyu. Abstract

2002. Generalization of non-singularity Conditions of Fifth Order Rotatable Designs.. Everyman's Science vol. XVII (1991).. : EM Ngatia, LW Gathece, FG Macigo, TK Mulli, LN Mutara, EG Wagaiyu. Abstract

1991. A fifth Order Rotatable design in Three dimensions. Comm., Stat., Theo. Meth., vol. A18. : EM Ngatia, LW Gathece, FG Macigo, TK Mulli, LN Mutara, EG Wagaiyu. Abstract

1989. Fifth Order Rotatability. Comm. Stat. Theo. Meth. Vol A17, No. 3. : EM Ngatia, LW Gathece, FG Macigo, TK Mulli, LN Mutara, EG Wagaiyu. Abstract

1987. Ph.D. Thesis entitled Fifth Order Rotatable Designs submitted to the University of Nairobi. Kenya. : EM Ngatia, LW Gathece, FG Macigo, TK Mulli, LN Mutara, EG Wagaiyu. Abstract

1985.