Eze, Ukamaka U.; Ngoepe, Ernest Chuene; Anene, Boniface M.; Ezeokonkwo, Romanus C.; Nwosuh, Chika I.; Sabeta, Claude Taurai(MDPI Publishing, 2020-01-23)
Brown, Geoffrey James; Forbes, Patricia B.C.; Myburgh, Jan G.; Nothling, Johan Oliviette(NISC Pty (Ltd) and Informa Limited (trading as Taylor and Francis Group, 2021)