Armstrong, D., and C. Krattenthaler. “Euler Characteristic of the Truncated Order Complex of Generalized Noncrossing Partitions”. The Electronic Journal of Combinatorics 16, no. 1 (November 30, 2009): R143. Accessed March 16, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v16i1r143.