@article{TIMM_2019_25_1_a10,
     author = {S. I. Mitrokhin},
     title = {Asymptotics of the spectrum of a periodic boundary value problem for a differential operator with a summable potential},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {136--149},
     publisher = {mathdoc},
     volume = {25},
     number = {1},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2019_25_1_a10/}
}