@article{TRSPY_1965_77_a4,
     author = {V. I. Burenkov},
     title = {Local lemmas for certain classes of differentiable functions},
     journal = {Informatics and Automation},
     pages = {65--71},
     publisher = {mathdoc},
     volume = {77},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1965_77_a4/}
}