Link to Selected Publications:
https://www.sciencedirect.com/science/article/pii/S2215098616308497?via%3Dihub
https://www.emerald.com/insight/content/doi/10.1108/ijlss-06-2017-0063/full/html
https://www.inderscience.com/offers.php?id=87103
https://www.worldscientific.com/doi/abs/10.1142/S0219649214500221
https://www.researchgate.net/publication/267943316_The_Plan-Do-Check-Act_Cycle_of_Value_Addition
https://sanad.iau.ir/journal/jie/article_274_14013af42811e68ef3b6c94bb3cee223.pdf
https://academicjournals.org/journal/AJBM/article-full-text-pdf/600B99247485.pdf
https://www.researchgate.net/publication/267742327_Performance_Analysis_on_Public_Bus_Transport_of_the_City_of_Addis_Ababa
https://www.ajol.info/index.php/jasr/article/view/112553
https://www.emerald.com/insight/content/doi/10.1108/srj-12-2019-0411/full/html