Karrass, A.; Solitar, D. The free product of two groups with a malnormal amalgamated subgroup. (English) Zbl 0247.20028 Can. J. Math. 23, 933-959 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 26 Documents MSC: 20E06 Free products of groups, free products with amalgamation, Higman-Neumann-Neumann extensions, and generalizations PDFBibTeX XMLCite \textit{A. Karrass} and \textit{D. Solitar}, Can. J. Math. 23, 933--959 (1971; Zbl 0247.20028) Full Text: DOI