Aksenov, V. A., O. V. Borodin, and A. O. Ivanova. “Weight of 3-Paths in Sparse Plane Graphs”. The Electronic Journal of Combinatorics 22, no. 3 (August 28, 2015): P3.28. Accessed March 27, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v22i3p28.