@article{DAN_1968_183_5_a7,
     author = {S. G. Smirnov},
     title = {Smooth knots in a manifold of the homotopy type of a sphere},
     journal = {Doklady Akademii Nauk},
     pages = {1016--1019},
     year = {1968},
     volume = {183},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_183_5_a7/}
}