Ruohonen, Keijo Some combinatorial mappings of words. (English) Zbl 0332.68052 Ann. Acad. Sci. Fenn., Ser. A I, Diss. 9, 47 p. (1976). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 2 Documents MSC: 68Q45 Formal languages and automata 05A10 Factorials, binomial coefficients, combinatorial functions PDFBibTeX XMLCite \textit{K. Ruohonen}, Ann. Acad. Sci. Fenn., Ser. A I, Diss. 9, 47 p. (1976; Zbl 0332.68052)