Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{PMFA_1980__25_2_a2, author = {Laugwitz, Detlef}, title = {Eulerovy \v{c}tverce}, journal = {Pokroky matematiky, fyziky a astronomie}, pages = {69--79}, publisher = {mathdoc}, volume = {25}, number = {2}, year = {1980}, zbl = {0429.05023}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/PMFA_1980__25_2_a2/} }
Laugwitz, Detlef. Eulerovy čtverce. Pokroky matematiky, fyziky a astronomie, Tome 25 (1980) no. 2, pp. 69-79. http://geodesic.mathdoc.fr/item/PMFA_1980__25_2_a2/