@article{DE_1970_6_3_a19,
     author = {V. N. Laptinskii},
     title = {Parametric functions of several matrices and of a countable set of matrices},
     journal = {Differencialʹnye uravneni\^a},
     pages = {558--560},
     publisher = {mathdoc},
     volume = {6},
     number = {3},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_3_a19/}
}