@article{MZM_1986_40_1_a10,
     author = {S. B. Klimentov},
     title = {Bending of a piece of an ovaloid into a surface with self-intersection},
     journal = {Matemati\v{c}eskie zametki},
     pages = {98--114},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1986_40_1_a10/}
}