@article{DE_1975_11_6_a1,
     author = {P. B. Golokvoschyus},
     title = {Behavior of the norm of the integral matrix of a certain two-dimensional system of differential equations in the neighborhood of a singular point of the system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {961--974},
     publisher = {mathdoc},
     volume = {11},
     number = {6},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_6_a1/}
}