@article{DE_2000_36_3_a5,
     author = {I. N. Sergeev},
     title = {A formula for the minimal exponent of a three-dimensional system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {345--354},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_3_a5/}
}