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@article{IM_1994__117_1_144225, author = {Donald J. Collins}, title = {Relations among the squares of the generators of the braid groups.}, journal = {Inventiones mathematicae}, pages = {525--530}, publisher = {mathdoc}, volume = {117}, number = {1}, year = {1994}, zbl = {0822.20040}, url = {http://geodesic.mathdoc.fr/item/IM_1994__117_1_144225/} }
Donald J. Collins. Relations among the squares of the generators of the braid groups.. Inventiones mathematicae, Tome 117 (1994) no. 1, pp. 525-530. http://geodesic.mathdoc.fr/item/IM_1994__117_1_144225/