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@article{MZ_1977__153_172481, author = {Robert G. Burns and Charles C. Edmunds}, title = {The {Equations} s-1 t-1st=u-1 v-1 uv in a {Free} {Product} of {Groups.}}, journal = {Mathematische Zeitschrift}, pages = {83--88}, publisher = {mathdoc}, volume = {153}, year = {1977}, url = {http://geodesic.mathdoc.fr/item/MZ_1977__153_172481/} }
Robert G. Burns; Charles C. Edmunds. The Equations s-1 t-1st=u-1 v-1 uv in a Free Product of Groups.. Mathematische Zeitschrift, Tome 153 (1977), pp. 83-88. http://geodesic.mathdoc.fr/item/MZ_1977__153_172481/