@article{IVM_2018_10_a6,
     author = {I. N. Sergeev},
     title = {On simplified formulas for the central exponents of differential systems with non-uniform scales},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {60--78},
     year = {2018},
     number = {10},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2018_10_a6/}
}