@article{MZM_1967_1_4_a9,
     author = {P. P. Zabreiko and M. A. Krasnosel'skii and V. Ya. Stetsenko},
     title = {Estimates of the spectral radius of postive linear operators},
     journal = {Matemati\v{c}eskie zametki},
     pages = {461--468},
     publisher = {mathdoc},
     volume = {1},
     number = {4},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1967_1_4_a9/}
}