Ocen, Gilbert Gilibrays; Mugeni, Gilbert Barasa; Matovu, Davis(International Journal of Advanced Research in Computer Science and Software Engineering, 2016-05)
Madivoli, Edwin Shigwenya; Kareru, Patrick Gachoki; Gachanja, Anthony Ngure; Mugo, Samuel Mutuura; Makhanu, David Sujee; Gavamukulya, Yahaya(Springer, 2019)