@article{IVM_2011_1_a1,
     author = {D. S. Bykov and Yu. F. Dolgii},
     title = {Approximating characteristic equations for autonomous systems of differential equations with aftereffect},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {10--23},
     publisher = {mathdoc},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2011_1_a1/}
}