TY  - JOUR
AU  - Marek, Ivo
TI  - On the minimax principle for $K$-positive operators (Preliminary communication)
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1966
SP  - 109
EP  - 112
VL  - 07
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1966__7_1_a5/
LA  - en
ID  - CMUC_1966__7_1_a5
ER  -