Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019,
PDF URL: https://www.ijtsrd.com/papers/ijtsrd28052.pdf
Paper URL: https://www.ijtsrd.com/engineering/other/28052/service-science-an-introduction/matthew-n-o-sadiku