1.
Barbero G. JF, Salas J, VillaseƱor EJ. Generalized Stirling Permutations and Forests: Higher-Order Eulerian and Ward Numbers. Electron. J. Combin. [Internet]. 2015Sep.11 [cited 2026Mar.27];22(3):P3.37. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v22i3p37