@article{ZNSL_1992_194_a17,
     author = {V. N. Solev},
     title = {On a condition of local regularity},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {141--149},
     year = {1992},
     volume = {194},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1992_194_a17/}
}