A Generalised Ruelle Perron-Frobenius Theorem and Some Applications Peter Walters — 1975 Publications mathématiques et informatique de Rennes
Equilibrium States for ß-Transformations and Related Transformations. Peter Walters — 1978 Mathematische Zeitschrift
Minimal skew-product homeomorphisms and coalescence William Parry; Peter Walters — 1970 Compositio Mathematica