Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1962__12_4_a9, author = {Petr\'a\v{s}, Milan}, title = {Tenzorov\'a interpret\'acia {Wickovho} pravidla}, journal = {Mathematica slovaca}, pages = {312--319}, publisher = {mathdoc}, volume = {12}, number = {4}, year = {1962}, mrnumber = {0159589}, language = {sl}, url = {http://geodesic.mathdoc.fr/item/MASLO_1962__12_4_a9/} }
Petráš, Milan. Tenzorová interpretácia Wickovho pravidla. Mathematica slovaca, Tome 12 (1962) no. 4, pp. 312-319. http://geodesic.mathdoc.fr/item/MASLO_1962__12_4_a9/