@article{MZM_1990_48_5_a14,
     author = {A. A. Shmelev},
     title = {Combined approximations of some transcendental numbers},
     journal = {Matemati\v{c}eskie zametki},
     pages = {128--137},
     publisher = {mathdoc},
     volume = {48},
     number = {5},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_5_a14/}
}