Authors: Copeland, BJ Sylvan, R

Citation: Bj. Copeland et R. Sylvan, Beyond the universal Turing machine, AUST J PHIL, 77(1), 1999, pp. 46-67

Authors: Sylvan, R

Citation: R. Sylvan, What is that item designated negation?, APPL LOG S, 13, 1999, pp. 299-324