Fudickar, Sebastian J.F., and Klaus Rebensburg. “TMNet - Distributed Viewing and Editing of Topic Maps in the World Wide Web Environment”. International Journal of Online and Biomedical Engineering (iJOE) 3, no. 2 (May 13, 2007). Accessed May 2, 2024. https://online-journals.org/index.php/i-joe/article/view/388.