Methane emission from rice cultivation in different agro-ecological zones of the Mekong river delta: seasonal patterns and emission factors for baseline water management - Vo, Thi Bach Thuong; Wassmann, Reiner; Tirol-Padre, Agnes; Cao, Van Phuong; MacDonald, Ben; Espaldon, Maria Victoria; Sander, Björn Ole (Informa UK Limited, 2018)