A Bijection Between the Recurrent Configurations of a Hereditary   Chip-Firing Model and Spanning Trees
  Hereditary chip-firing models generalize the Abelian sandpile model and the cluster firing model to an exponential family of games induced by covers of the vertex set. This generalization retains some desirable properties, e.g. stabilization is independent of firings chosen and each chip-firing equivalence class contains a unique recurrent configuration. In this paper we present an explicit bijection between the recurrent configurations of a hereditary chip-firing model on a graph and its spanning trees. 
Spencer Backman
math.CO cond-mat.stat-mech cs.DM math-ph math.MP