Alfarano GN, Byrne E, Fulcher A. The Free Product of $q$-Matroids. Electron. J. Combin. [Internet]. 2025Sep.19 [cited 2026Mar.30];32(3):P3.52. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v32i3p52