Evaluation of Valiantzas’ simplified forms of the FAO-56 Penman-Monteith Reference evapotranspiration model in a humid climate - Djaman, K.; Rudnick, D.; Mel, V.C.; Mutiibwa, D.; Diop, L.; Sall, M.; Kabengue, I.; Bodian, A.; Tabari, H.; Irmak, S. (American Society of Civil Engineers, 2017)