@article{MZM_1969_5_6_a4,
     author = {N. I. Fel'dman},
     title = {An~inequality for a~linear form in the logarithms of algebraic numbers},
     journal = {Matemati\v{c}eskie zametki},
     pages = {681--689},
     year = {1969},
     volume = {5},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1969_5_6_a4/}
}