Evans, William, Michael Kaufmann, William Lenhart, Tamara Mchedlidze, and Stephen Wismath. “Bar 1-Visibility Graphs and Their Relation to Other Nearly Planar Graphs ”. Journal of Graph Algorithms and Applications 18, no. 5 (December 1, 2014): 721–739. Accessed December 22, 2024. https://jgaa.info/index.php/jgaa/article/view/paper343.