@article{MZM_1994_55_3_a5,
     author = {P. L. Ivankov},
     title = {On estimates of degrees of linear independence for some numbers},
     journal = {Matemati\v{c}eskie zametki},
     pages = {59--67},
     year = {1994},
     volume = {55},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1994_55_3_a5/}
}