Schee genannt Halfmann, Sebastian; Evangelatos, Nikolaos; Kweyu, Emmanuel; De Villiers, Carina; Steinhausen, Kirsten; Van der Merwe, Alta; Brand, Angela(Karger, 2019-08)
Kroeze, J.H. (Jan Hendrik); Matthee, Machdel C.; Bothma, T.J.D. (Theodorus Jan Daniel)(Department of Knowledge and Information Management, University of Johannesburg, 2004-12)
Twinomurinzi, Hossana; Zwane, Mphikeleli Gabriel; Debusho, Legesse Kassa(Learning Information Networking and Knowledge (LINK) Centre, Graduate School of Public and Development, 2012)