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@article{MOMA_1992__113_4_178562, author = {G. Lewicki}, title = {Bernstein's}, journal = {Monatshefte f\"ur Mathematik}, pages = {213--226}, publisher = {mathdoc}, volume = {113}, number = {4}, year = {1992}, zbl = {0764.41033}, url = {http://geodesic.mathdoc.fr/item/MOMA_1992__113_4_178562/} }
G. Lewicki. Bernstein's. Monatshefte für Mathematik, Tome 113 (1992) no. 4, pp. 213-226. http://geodesic.mathdoc.fr/item/MOMA_1992__113_4_178562/