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@article{MAN_1995__303_4_165370, author = {Hermann Render}, title = {Countably determined sets and a conjecture of {C.W.} {Henson.}}, journal = {Mathematische Annalen}, pages = {307--324}, publisher = {mathdoc}, volume = {303}, number = {4}, year = {1995}, zbl = {0838.54029}, url = {http://geodesic.mathdoc.fr/item/MAN_1995__303_4_165370/} }
Hermann Render. Countably determined sets and a conjecture of C.W. Henson.. Mathematische Annalen, Tome 303 (1995) no. 4, pp. 307-324. http://geodesic.mathdoc.fr/item/MAN_1995__303_4_165370/