@article{ZNSL_1998_252_a13,
     author = {N. D. Lebedeva},
     title = {Description of a class of solids in~$\mathbb R^3$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {149--164},
     year = {1998},
     volume = {252},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1998_252_a13/}
}