@article{ZNSL_2004_314_a15,
     author = {A. V. Khaustov and N. A. Shirokov},
     title = {A~converse approximation theorem on subsets of elliptic curves},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {257--271},
     publisher = {mathdoc},
     volume = {314},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2004_314_a15/}
}