@article{ZVMMF_2013_53_6_a9,
     author = {A. A. Boichuk and A. A. Pokutnyi and V. F. Chistyakov},
     title = {Application of perturbation theory to the solvability analysis of differential algebraic equations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {958--969},
     publisher = {mathdoc},
     volume = {53},
     number = {6},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2013_53_6_a9/}
}