Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts
@article{MV_1968_20_2_a1, author = {A. U\v{s}an}, title = {Odno opredelenie gruppy i ee obobshchenie na n-arnij slu\v{c}aj}, journal = {Matemati\v{c}ki vesnik}, pages = {145 }, publisher = {mathdoc}, volume = {20}, number = {2}, year = {1968}, url = {http://geodesic.mathdoc.fr/item/MV_1968_20_2_a1/} }
A. Ušan. Odno opredelenie gruppy i ee obobshchenie na n-arnij slučaj. Matematički vesnik, Tome 20 (1968) no. 2, p. 145 . http://geodesic.mathdoc.fr/item/MV_1968_20_2_a1/