@article{DAN_1978_238_5_a0,
     author = {B. V. Aleshin and P. I. Kuznetsov},
     title = {On a case in the theory of $\varepsilon$-invariance of differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {1017--1020},
     publisher = {mathdoc},
     volume = {238},
     number = {5},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_238_5_a0/}
}