Auer, Christopher, Franz Brandenburg, Andreas Gleißner, and Josef Reislhuber. “1-Planarity of Graphs With a Rotation System”. Journal of Graph Algorithms and Applications 19, no. 1 (January 1, 2015): 67–86. Accessed May 1, 2025. https://www.jgaa.info/index.php/jgaa/article/view/paper347.