@article{VMUMM_1987_6_a4,
     author = {E. A. Rukhadze},
     title = {A lower bound for the approximation of $\ln2$  by rational numbers},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {25--29},
     publisher = {mathdoc},
     number = {6},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1987_6_a4/}
}