info:oai:icrisat:9773info:ofi/fmt:xml:xsd:journalWheelerS AWheeler, S AZuoAZuo, ABjornlundHBjornlund, HMdemuM VMdemu, M VVan RooyenA FVan Rooyen, A FMunguambePMunguambe, PAn overview of extension use in irrigated agriculture and case studies in south-eastern AfricaInternational Journal of Water Resources Development0790-0627201733755-7695article