@article{TMF_1978_37_2_a12,
     author = {N. E. Firsova},
     title = {Some spectral identities for the one-dimensional hill operator},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {281--288},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1978_37_2_a12/}
}