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@article{CMH_1989__64_1_140152, author = {J.P. Levine}, title = {Link concordance and algebraic closure of groups.}, journal = {Commentarii mathematici Helvetici}, pages = {236--255}, publisher = {mathdoc}, volume = {64}, number = {1}, year = {1989}, zbl = {0692.57009}, url = {http://geodesic.mathdoc.fr/item/CMH_1989__64_1_140152/} }
J.P. Levine. Link concordance and algebraic closure of groups.. Commentarii mathematici Helvetici, Tome 64 (1989) no. 1, pp. 236-255. http://geodesic.mathdoc.fr/item/CMH_1989__64_1_140152/