@article{ZNSL_1981_111_a1,
     author = {Yu. K. Dem'yanovich},
     title = {Successive approximation by spaces of local functions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {31--51},
     publisher = {mathdoc},
     volume = {111},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_111_a1/}
}