1.
Deng Q, Jin X, Dong F, Tay EG. Even Subgraph Expansions for the Flow Polynomial of Planar Graphs with Maximum Degree at Most 4. Electron. J. Combin. [Internet]. 2018Apr.3 [cited 2026Apr.17];25(2):#P2.7. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v25i2p7