@article{105114, author = {Ivo Marek}, title = {A note on the minimax principle for $K$-positive operators}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {008}, year = {1967}, pages = {311-314}, zbl = {0162.45702}, mrnumber = {0217623}, language = {en}, url = {http://dml.mathdoc.fr/item/105114} }
Marek, Ivo. A note on the minimax principle for $K$-positive operators. Commentationes Mathematicae Universitatis Carolinae, Tome 008 (1967) pp. 311-314. http://gdmltest.u-ga.fr/item/105114/
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