@article{MZM_2007_82_3_a1,
     author = {A. A. Vasil'eva},
     title = {An {Existence} {Criterion} for a {Smooth} {Function} under {Constraints}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {335--346},
     publisher = {mathdoc},
     volume = {82},
     number = {3},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2007_82_3_a1/}
}