Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1986__27_4_a14, author = {Ml\v{c}ek, Josef}, title = {$\beta$-structures}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {765--773}, publisher = {mathdoc}, volume = {27}, number = {4}, year = {1986}, mrnumber = {874671}, zbl = {0617.03037}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1986__27_4_a14/} }
Mlček, Josef. $\beta$-structures. Commentationes Mathematicae Universitatis Carolinae, Tome 27 (1986) no. 4, pp. 765-773. http://geodesic.mathdoc.fr/item/CMUC_1986__27_4_a14/