TY - JOUR AU - Mark Dukes AU - Thomas Selig AU - Jason P. Smith AU - Einar Steingrímsson TI - Permutation graphs and the abelian sandpile model, tiered trees and non-ambiguous binary trees JO - The electronic journal of combinatorics PY - 2019 VL - 26 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.37236/8225/ DO - 10.37236/8225 ID - 10_37236_8225 ER -