@article{UFA_2014_6_3_a2,
     author = {A. V. Karpikova},
     title = {Asymptotics for eigenvalues of {Sturm{\textendash}Liouville} operator with periodic boundary conditions},
     journal = {Ufa mathematical journal},
     pages = {28--34},
     year = {2014},
     volume = {6},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2014_6_3_a2/}
}