Chun, Carolyn, Deborah Chun, Dillon Mayhew, and Stefan H. M. Van Zwam. “Fan-Extensions in Fragile Matroids”. The Electronic Journal of Combinatorics 22, no. 2 (May 22, 2015): P2.30. Accessed March 27, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v22i2p30.