Snyman, Jumari; Koekemoer, Otto; Van Schalkwyk, Antoinette; Van Vuren, Petrus Jansen; Snyman, Louwtjie P.; Williams, June Heather; Venter, Marietjie(MDPI, 2021-03)
Robbertse, Luise; Baron, Samantha; Van der Merwe, Nicolaas Albertus (Albie); Madder, Maxime; Stoltsz, Wilhelm Heinrich; Maritz-Olivier, Christine(Elsevier, 2016-06)