@article{DAN_1972_205_2_a8,
     author = {Nguen Ngok Z'ep},
     title = {A {Kupka{\textendash}Smale} theorem for smooth measure-preserving mappings},
     journal = {Doklady Akademii Nauk},
     pages = {289--291},
     year = {1972},
     volume = {205},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_205_2_a8/}
}