Eriksen N, Freij R, Wästlund J. Enumeration of Derangements with Descents in Prescribed Positions. Electron. J. Combin. [Internet]. 2009Mar.4 [cited 2026Mar.16];16(1):R32. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v16i1r32