Chepoi, Victor, Kolja Knauer, and Manon Philibert. “Two-Dimensional Partial Cubes”. The Electronic Journal of Combinatorics 27, no. 3 (August 7, 2020): #P3.29. Accessed May 13, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v27i3p29.