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@article{10_4064_fm_102_2_101_107, author = {C. Chong}, title = {$\ensuremath{\Sigma}_n$-cofinalities of $J_\ensuremath{\alpha}$}, journal = {Fundamenta Mathematicae}, pages = {101--107}, publisher = {mathdoc}, volume = {102}, number = {2}, year = {1979}, doi = {10.4064/fm-102-2-101-107}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-102-2-101-107/} }
C. Chong. $Σ_n$-cofinalities of $J_α$. Fundamenta Mathematicae, Tome 102 (1979) no. 2, pp. 101-107. doi : 10.4064/fm-102-2-101-107. http://geodesic.mathdoc.fr/articles/10.4064/fm-102-2-101-107/
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