Sign-graded posets, unimodality of W -polynomials and the Charney-Davis conjecture. Brändén, Petter — 2004 The Electronic Journal of Combinatorics [electronic only]
Counterexamples to the Neggers-Stanley conjecture. Brändén, Petter — 2004 Electronic Research Announcements of the American Mathematical Society [electronic only]
Mesh patterns and the expansion of permutation statistics as sums of permutation patterns. Brändén, Petter; Claesson, Anders — 2011 The Electronic Journal of Combinatorics [electronic only]