Pendavingh R, van der Pol J. On the Number of Matroids Compared to the Number of Sparse Paving Matroids. Electron. J. Combin. [Internet]. 2015Jun.15 [cited 2026Mar.27];22(2):P2.51. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v22i2p51