@article{10_21136_CMJ_1965_100663,
     author = {Schwarz, \v{S}tefan},
     title = {A semigroup treatment of some theorems on non-negative matrices},
     journal = {Czechoslovak Mathematical Journal},
     pages = {212--229},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {1965},
     doi = {10.21136/CMJ.1965.100663},
     mrnumber = {0175919},
     zbl = {0232.20139},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1965.100663/}
}