@article{CMUC_1961__2_4_a2,
     author = {Marek, Ivo},
     title = {A remark on linear operators leaving a cone invariant in a {Banach} space},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {10--16},
     publisher = {mathdoc},
     volume = {02},
     number = {4},
     year = {1961},
     zbl = {0105.31101},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1961__2_4_a2/}
}