Ritchie, R. W. Classes of recursive functions based on Ackermann’s function. (English) Zbl 0133.24903 Pac. J. Math. 15, 1027-1044 (1965). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 16 Documents Keywords:mathematical logic PDF BibTeX XML Cite \textit{R. W. Ritchie}, Pac. J. Math. 15, 1027--1044 (1965; Zbl 0133.24903) Full Text: DOI