Problematic Internet Use in South African Information Technology Workers. - Andrew Thatcher; Gisela Wretschko; James Fisher (HCI (17), 2007)

Problematic Internet Use among Information Technology Workers in South Africa. - Andrew Thatcher; Gisela Wretschko; James Fisher (Cyberpsychology Behav. Soc. Netw., 2008)

Online flow experiences, problematic Internet use and Internet procrastination. - Andrew Thatcher; Gisela Wretschko; Peter Fridjhon (Comput. Hum. Behav., 2008)