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@article{10_4064_fm_71_3_187_191, author = {Stephen Willard}, title = {Some examples in the theory of {Borel} sets}, journal = {Fundamenta Mathematicae}, pages = {187--191}, publisher = {mathdoc}, volume = {71}, number = {3}, year = {1971}, doi = {10.4064/fm-71-3-187-191}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-71-3-187-191/} }
Stephen Willard. Some examples in the theory of Borel sets. Fundamenta Mathematicae, Tome 71 (1971) no. 3, pp. 187-191. doi : 10.4064/fm-71-3-187-191. http://geodesic.mathdoc.fr/articles/10.4064/fm-71-3-187-191/
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