VON SOLMS, R.; DE LANGE, E. Case Notes: SenPortal: Internet-Based Services for Senior Citizens. The African Journal of Information and Communication (AJIC), South Africa, n. 13, 2013. DOI: 10.23962/10539/19277. Disponível em: https://ajic.wits.ac.za/article/view/13681. Acesso em: 31 jan. 2023.