Myrvold W, Woodcock J. A Large Set of Torus Obstructions and How They Were Discovered. Electron. J. Combin. [Internet]. 2018Jan.25 [cited 2026Mar.30];25(1):P1.16. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v25i1p16