Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{KYB_1988__24_1_a1, author = {Mich\'alek, Ji\v{r}{\'\i}}, title = {Normal covariances}, journal = {Kybernetika}, pages = {17--27}, publisher = {mathdoc}, volume = {24}, number = {1}, year = {1988}, mrnumber = {936550}, zbl = {0641.60043}, language = {en}, url = {http://geodesic.mathdoc.fr/item/KYB_1988__24_1_a1/} }
Michálek, Jiří. Normal covariances. Kybernetika, Tome 24 (1988) no. 1, pp. 17-27. http://geodesic.mathdoc.fr/item/KYB_1988__24_1_a1/