Table of Contents

Spin models and their symmetry groups.- Subgroups and products of permissible groups.- Primitive and imprimitive permissible groups.- Regular groups.- Graph-theoretical constructions of permissible groups.- Tables of permissible groups.- Duality transformation's and dual models.- Pseudo-lattices.- Homogeneous spin models on Cayley branches with surface field.- Random spin models on Cayley branches with surface field.- Spin models on recursive bond graph sequences and fractals.- Gauge models on plaquette branches.- Critical exponents for systems on self-similar pseudo-lattices.