@article{SM_1970_10_2_a7,
     author = {Lyudmila Keldysh},
     title = {Imbedding of locally unknotted one-dimensional manifolds in~$E^3$},
     journal = {Sbornik. Mathematics},
     pages = {267--287},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {1970},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1970_10_2_a7/}
}