Ngosi, R. K. and Omwenga, J. (2015) “Factors Contributing to Non-Productive Time in Geothermal Drilling in Kenya: A Case of Menengai Geothermal Project”, American Scientific Research Journal for Engineering, Technology, and Sciences, 14(3), pp. 16–26. Available at: https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/1092 (Accessed: 5 May 2024).