@article{DAN_1977_235_5_a17,
     author = {W. I. Fushchych and S. P. Onufriichuk},
     title = {On the invariance groups of one class of the enumerable system of the first-order partial differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {1056--1059},
     publisher = {mathdoc},
     volume = {235},
     number = {5},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_235_5_a17/}
}