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@article{10_4064_fm_143_2_179_181, author = {R. Kaufman}, title = {Extreme points and descriptive sets}, journal = {Fundamenta Mathematicae}, pages = {179--181}, publisher = {mathdoc}, volume = {143}, number = {2}, year = {1993}, doi = {10.4064/fm-143-2-179-181}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-143-2-179-181/} }
R. Kaufman. Extreme points and descriptive sets. Fundamenta Mathematicae, Tome 143 (1993) no. 2, pp. 179-181. doi : 10.4064/fm-143-2-179-181. http://geodesic.mathdoc.fr/articles/10.4064/fm-143-2-179-181/
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