%0 Journal Article %A Marek, Ivo %T On a method of D. Marsal for equations with positive operators %J Applications of Mathematics %D 1970 %P 413-417 %V 15 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1970.103315/ %R 10.21136/AM.1970.103315 %G en %F 10_21136_AM_1970_103315