@article{IIGUM_2017_20_a5,
     author = {N. A. Sidorov and D. N. Sidorov},
     title = {Skeleton decomposition of linear operators in the theory of nonregular systems of partial differential equations},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {75--95},
     publisher = {mathdoc},
     volume = {20},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2017_20_a5/}
}