Gitler I, Rodríguez-Martínez J de J, Rodríguez Sánchez G. On Ribbon Graphs that Admit a Partial Dual of Euler Genus at Most Two. Electron. J. Combin. [Internet]. 2026Feb.27 [cited 2026May20];33(1):#P1.39. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v33i1p39