1.
Plummer M, Zha X. On a Conjecture Concerning the Petersen Graph: Part II. Electron. J. Combin. [Internet]. 2014Feb.21 [cited 2026Mar.29];21(1):P1.34. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v21i1p34