@article{DE_1974_10_7_a21,
     author = {A. D. Sidorenko},
     title = {A theorem on the impossibility of a gradient catastrophe for a certain class of multidimensional systems of quasilinear equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1328--1331},
     publisher = {mathdoc},
     volume = {10},
     number = {7},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_7_a21/}
}