Kuria, David Ndegwa; Musiega, Douglas Engoke; Ngigi, Moses Murimi; Ngugi, Simon Kibue(International Journal of Computer Engineering Research, 2012-11-12)
Kuria, David Ndegwa; Gachari, Moses Karoki; Macharia, Mary Wandia; Mungai, Esther(International Journal of Water Resources and Environmental Engineering, 2012-01)