@article{SM_1968_6_3_a4,
     author = {N. I. Fel'dman},
     title = {Improved estimate for a linear form of the logarithms of algebraic numbers},
     journal = {Sbornik. Mathematics},
     pages = {393--406},
     publisher = {mathdoc},
     volume = {6},
     number = {3},
     year = {1968},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1968_6_3_a4/}
}