Fuchsian differential equation for the perimeter generating function of three-choice polygons. Guttmann, Anthony J.; Jensen, Iwan — 2005 Séminaire Lotharingien de Combinatoire [electronic only]
Area distribution and scaling function for punctured polygons. Richard, Christoph; Jensen, Iwan; Guttmann, Anthony J. — 2008 The Electronic Journal of Combinatorics [electronic only]