@article{MZM_2019_105_6_a0,
     author = {Yu. A. Alpin and V. S. Al'pina},
     title = {A {New} {Proof} of the {Protasov--Voynov} {Theorem} on {Semigroups} of {Nonnegative} {Matrices}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {807--815},
     publisher = {mathdoc},
     volume = {105},
     number = {6},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2019_105_6_a0/}
}