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@article{AM2_1986__30_137113, author = {S\'andor Szab\'o}, title = {Some problems on splittings of groups.}, journal = {Aequationes mathematicae}, pages = {70--79}, publisher = {mathdoc}, volume = {30}, year = {1986}, zbl = {0611.20019}, url = {http://geodesic.mathdoc.fr/item/AM2_1986__30_137113/} }
Sándor Szabó. Some problems on splittings of groups.. Aequationes mathematicae, Tome 30 (1986), pp. 70-79. http://geodesic.mathdoc.fr/item/AM2_1986__30_137113/