@article{RM_2000_55_5_a11,
     author = {S. N. Tumanov},
     title = {Asymptotics of the eigenvalues of the indefinite {Sturm--Liouville} problem with two turning points},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1007--1008},
     publisher = {mathdoc},
     volume = {55},
     number = {5},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2000_55_5_a11/}
}