@article{DAN_1977_235_5_a11,
     author = {T. A. Ryzhkina},
     title = {On some homeomorphisms of the space $R^3$ from the point of view of their action on specific differential systems},
     journal = {Doklady Akademii Nauk},
     pages = {1034--1037},
     publisher = {mathdoc},
     volume = {235},
     number = {5},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_235_5_a11/}
}