%0 Journal Article %A S. I. Mitrokhin %T Asymptotics of the spectrum of a periodic boundary value problem for a differential operator with a summable potential %J Trudy Instituta matematiki i mehaniki %D 2019 %P 136-149 %V 25 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMM_2019_25_1_a10/ %G ru %F TIMM_2019_25_1_a10