Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{KYB_1970__6_1_a0, author = {Petr\'a\v{s}, \v{S}tefan}, title = {Niektor\'e aspekty kybernetick\'ych syst\'emov}, journal = {Kybernetika}, pages = {--9}, publisher = {mathdoc}, volume = {06}, number = {1}, year = {1970}, language = {sl}, url = {http://geodesic.mathdoc.fr/item/KYB_1970__6_1_a0/} }
Petráš, Štefan. Niektoré aspekty kybernetických systémov. Kybernetika, Tome 06 (1970) no. 1, p. 9. http://geodesic.mathdoc.fr/item/KYB_1970__6_1_a0/