Appel, K.; Djorup, F. On the group generated by a free semigroup. (English) Zbl 0126.04701 Proc. Am. Math. Soc. 15, 838-840 (1964). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document Keywords:group theory PDF BibTeX XML Cite \textit{K. Appel} and \textit{F. Djorup}, Proc. Am. Math. Soc. 15, 838--840 (1964; Zbl 0126.04701) Full Text: DOI