@article{DAN_1996_347_6_a2,
     author = {B. M. Gurevich},
     title = {Finite approximations of infinite nonnegative matrices and the},
     journal = {Doklady Akademii Nauk},
     pages = {732--735},
     publisher = {mathdoc},
     volume = {347},
     number = {6},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_347_6_a2/}
}