Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1971_5_1_a17, author = {S. V. Ovchinnikov}, title = {Positive-definite functions on {Chevalley} groups}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {91--92}, publisher = {mathdoc}, volume = {5}, number = {1}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1971_5_1_a17/} }
S. V. Ovchinnikov. Positive-definite functions on Chevalley groups. Funkcionalʹnyj analiz i ego priloženiâ, Tome 5 (1971) no. 1, pp. 91-92. http://geodesic.mathdoc.fr/item/FAA_1971_5_1_a17/