Björner A, Farley JD. Chain Polynomials of Distributive Lattices are 75% Unimodal. Electron. J. Combin. [Internet]. 2005Mar.14 [cited 2026Mar.27];12(1):N4. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v12i1n4