@article{CMUC_1978__19_2_a3,
     author = {Hor\'ak, Karel},
     title = {On the {Perron-Frobenius} theory for sets of positive operators},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {265--279},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1978},
     mrnumber = {0500304},
     zbl = {0382.47016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1978__19_2_a3/}
}