@article{DE_1969_5_6_a7,
     author = {H. D. Hoang},
     title = {Eigenvector theory and reducible $m$th order systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1055--1067},
     publisher = {mathdoc},
     volume = {5},
     number = {6},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_6_a7/}
}