Svinurai, Walter; Hassen, Abubeker; Tesfamariam, Eyob Habte; Ramoelo, Abel; Cullen, Brendan(NISC (Pty) Ltd and Informa UK Limited (trading as Taylor & Francis Group), 2021)
Bieri, Mari; Du Toit, Justin; Feig, Gregor Timothy; Maluta, Nnditshedzeni Eric; Mantlana, Brian; Mateyisi, Mohau; Midgley, Guy F.; Mutanga, Shingirirai; Von Maltitz, Graham; Brummer, Christian(National Association for Clean Air, 2022)