Dukes, MarkSelig, ThomasSmith, Jason P.Steingrimsson, Einar2019-08-182019-08-182019-08-16Dukes, M, Selig, T, Smith, J P & Steingrimsson, E 2019, 'Permutation Graphs and the Abelian Sandpile Model, Tiered Trees and Non-Ambiguous Binary Trees', Electronic Journal of Combinatorics, vol. 26, no. 3, P3.29. < http://arxiv.org/abs/1810.02437v1 >1077-8926ArXiv: http://arxiv.org/abs/1810.02437v1ORCID: /0000-0002-4209-1604/work/63244279http://hdl.handle.net/2164/12726Dukes, Selig and Steingr´ımsson were supported by grant EP/M015874/1 from The Engineering and Physical Sciences Research Council. Smith was supported by grant EP/M027147/1 from The Engineering and Physical Sciences Research Council.370319engmath.COQA MathematicsEngineering and Physical Sciences Research Council (EPSRC)EP/M015874/1EP/M027147/1QAJournal articlehttp://arxiv.org/abs/1810.02437v1https://www.combinatorics.org/ojs/index.php/eljc/article/view/v26i3p29263