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@article{ELMA_1988__43_3_141423, author = {Graciela Silvia Birman}, title = {On {L2} and {L3.}}, journal = {Elemente der Mathematik}, pages = {46--49}, publisher = {mathdoc}, volume = {43}, number = {3}, year = {1988}, zbl = {0705.53006}, url = {http://geodesic.mathdoc.fr/item/ELMA_1988__43_3_141423/} }
Graciela Silvia Birman. On L2 and L3.. Elemente der Mathematik, Tome 43 (1988) no. 3, pp. 46-49. http://geodesic.mathdoc.fr/item/ELMA_1988__43_3_141423/