Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1967__8_4_a7, author = {Frol{\'\i}k, Zden\v{e}k}, title = {Non-homogeneity of $\beta P-P$}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {705--709}, publisher = {mathdoc}, volume = {08}, number = {4}, year = {1967}, mrnumber = {0266160}, zbl = {0163.44601}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1967__8_4_a7/} }
Frolík, Zdeněk. Non-homogeneity of $\beta P-P$. Commentationes Mathematicae Universitatis Carolinae, Tome 08 (1967) no. 4, pp. 705-709. http://geodesic.mathdoc.fr/item/CMUC_1967__8_4_a7/