1.
Costa S, Mella L, Pasotti A. Weak Heffter Arrays and Biembedding Graphs on Non-Orientable Surfaces. Electron. J. Combin. [Internet]. 2024Jan.12 [cited 2026Mar.28];31(1):P1.8. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v31i1p8