@article{10_21136_CMJ_1982_101836,
     author = {Everitt, William Norrie and Wray, S. D.},
     title = {A singular spectral identity and inequality involving the {Dirichlet} integral of an ordinary differential expression},
     journal = {Czechoslovak Mathematical Journal},
     pages = {589--607},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {1982},
     doi = {10.21136/CMJ.1982.101836},
     mrnumber = {682134},
     zbl = {0533.34026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1982.101836/}
}