Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1967__8_2_a11, author = {Marek, Ivo}, title = {A note on the minimax principle for $K$-positive operators}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {311--314}, publisher = {mathdoc}, volume = {08}, number = {2}, year = {1967}, mrnumber = {0217623}, zbl = {0162.45702}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1967__8_2_a11/} }
Marek, Ivo. A note on the minimax principle for $K$-positive operators. Commentationes Mathematicae Universitatis Carolinae, Tome 08 (1967) no. 2, pp. 311-314. http://geodesic.mathdoc.fr/item/CMUC_1967__8_2_a11/