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]