Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1990__31_4_a13, author = {Balcerzak, Marek}, title = {On isomorphisms between $\sigma$-ideals on $\omega_1$}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {743--749}, publisher = {mathdoc}, volume = {31}, number = {4}, year = {1990}, mrnumber = {1091371}, zbl = {0722.04002}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1990__31_4_a13/} }
Balcerzak, Marek. On isomorphisms between $\sigma$-ideals on $\omega_1$. Commentationes Mathematicae Universitatis Carolinae, Tome 31 (1990) no. 4, pp. 743-749. http://geodesic.mathdoc.fr/item/CMUC_1990__31_4_a13/