TY - JOUR AU - M. Yu. Luchin TI - Estimation of the measure of irrationality of the number $\ln{\frac{7}{4}}$ JO - Čebyševskij sbornik PY - 2013 SP - 123 EP - 131 VL - 14 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CHEB_2013_14_2_a10/ LA - ru ID - CHEB_2013_14_2_a10 ER -