Moments of inertia associated with the lozenge tilings of a hexagon. Fischer, Ilse (2001) Séminaire Lotharingien de Combinatoire [electronic only]
Monomer-dimer tatami tilings of rectangular regions. Erickson, Alejandro, Ruskey, Frank, Woodcock, Jennifer, Schurch, Mark (2011) The Electronic Journal of Combinatorics [electronic only]
Multiple tilings of ℤ with long periods, and tiles with many-generated level semigroups. Steinberger, John P. (2005) The New York Journal of Mathematics [electronic only]