1.
Guzmán-Pro S, Hernández-Cruz C. Duality Pairs and Homomorphisms to Oriented and Unoriented Cycles. Electron. J. Combin. [Internet]. 2021Jul.16 [cited 2026Mar.27];28(3):P3.17. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v28i3p17