Fulek, Radoslav, Michael Pelsmajer, and Marcus Schaefer. “Hanani-Tutte for Radial Planarity”. Journal of Graph Algorithms and Applications 21, no. 1 (January 1, 2017): 135–154. Accessed June 30, 2024. https://jgaa.info/index.php/jgaa/article/view/paper408.