Audoux, Benjamin, Paolo Bellingeri, Jean-Baptiste Meilhan, and Emmanuel Wagner. “Homotopy Classification of Ribbon Tubes and Welded String Links”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 17, no. 2 (June 19, 2017): 713-761. Accessed May 27, 2025. http://20.103.181.36/index.php/annaliscienze/article/view/511.