The Classification of 2-Isohedral Tilings of the Plane

Olaf Delgado, Daniel Huson and Elizaveta Zamorzaeva

Two different methods for enumerating k-isohedral tilings are
discussed. One is geometric: by splitting and gluing tiles. The other
is combinatorial: by enumerating the appropriate Delaney-Dress symbols. Both
methods yield 1270 types of proper 2-isohedral tilings of the plane.

Appeared in:
Geometriae Dedicata, 42:43--117 (1992)