Wojciech Zakowski Continuous Simple Z-Machines, Z-Computable Functions and Sets of Functions of n Real Variables. [Citation Graph (0, 0)][DBLP] MFCS, 1974, pp:143-156 [Conf]
Wojciech Zakowski A Generalization of the Notions of a Machine and Computability [Citation Graph (0, 0)][DBLP] Information and Control, 1977, v:33, n:2, pp:166-176 [Journal]