@article{DAN_1967_173_2_a6,
     author = {A. P. Savin},
     title = {The structure of the set of points of one-to-oneness in continuous mappings of manifolds},
     journal = {Doklady Akademii Nauk},
     pages = {267--269},
     publisher = {mathdoc},
     volume = {173},
     number = {2},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_173_2_a6/}
}