Advances of Science and Technology 6th EAI International Conference, ICAST 2018, Bahir Dar, Ethiopia, October 5-7, 2018, Proceedings - Zimale, Fasikaw Atanaw; Zimale, Fasikaw Atanaw; Enku Nigussie, Temesgen; Enku Nigussie, Temesgen; Fanta, Solomon Workneh; Fanta, Solomon Workneh (Springer International Publishing : Imprint: Springer, 2019)