@article{DAN_1971_200_1_a3,
     author = {Liudmila Keldysh},
     title = {Pseudoisotopy for some locally knotted simple arcs in $E^3$},
     journal = {Doklady Akademii Nauk},
     pages = {21--23},
     publisher = {mathdoc},
     volume = {200},
     number = {1},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_200_1_a3/}
}