@article{DA_1979_19_a0,
     author = {V. L. Beresnev and A. I. Davydov},
     title = {Matrices having the property of connectedness},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {3--13},
     year = {1979},
     number = {19},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1979_19_a0/}
}