@article{MZM_2008_84_4_a9,
     author = {A. V. Mironenko},
     title = {Approximation by the {Class} of {Functions} with {Bounded} {Second} {Derivative}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {583--594},
     publisher = {mathdoc},
     volume = {84},
     number = {4},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2008_84_4_a9/}
}