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@article{JRAM_1982__337_152481, author = {P. Tworzewski and T. Winiarski}, title = {Analytic sets with proper projections.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {68--76}, publisher = {mathdoc}, volume = {337}, year = {1982}, zbl = {0497.32024}, url = {http://geodesic.mathdoc.fr/item/JRAM_1982__337_152481/} }
P. Tworzewski; T. Winiarski. Analytic sets with proper projections.. Journal für die reine und angewandte Mathematik, Tome 337 (1982), pp. 68-76. http://geodesic.mathdoc.fr/item/JRAM_1982__337_152481/