@article{CMUC_1967_8_1_a2,
     author = {Marek, Ivo},
     title = {An infinite dimensional analogue of {R.} {S.} {Varga's} lemma},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {27--38},
     year = {1967},
     volume = {8},
     number = {1},
     mrnumber = {0232263},
     zbl = {0169.17201},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1967_8_1_a2/}
}