Gildenhuys, D.; Kharlampovich, O.; Myasnikov, A. (1995), "CSA-groups and separated free constructions", Bulletin of the Australian Mathematical Society, 52 (1): 63–84, arXiv:math/9605203, doi:10.1017/S0004972700014453, MR1344261.
Karrass, A.; Solitar, D. (1971), "The free product of two groups with a malnormal amalgamated subgroup", Canadian Journal of Mathematics, 23: 933–959, doi:10.4153/cjm-1971-102-8, MR0314992.
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arxiv.org
Gildenhuys, D.; Kharlampovich, O.; Myasnikov, A. (1995), "CSA-groups and separated free constructions", Bulletin of the Australian Mathematical Society, 52 (1): 63–84, arXiv:math/9605203, doi:10.1017/S0004972700014453, MR1344261.
Gildenhuys, D.; Kharlampovich, O.; Myasnikov, A. (1995), "CSA-groups and separated free constructions", Bulletin of the Australian Mathematical Society, 52 (1): 63–84, arXiv:math/9605203, doi:10.1017/S0004972700014453, MR1344261.
Karrass, A.; Solitar, D. (1971), "The free product of two groups with a malnormal amalgamated subgroup", Canadian Journal of Mathematics, 23: 933–959, doi:10.4153/cjm-1971-102-8, MR0314992.