@article{oai:tsukuba.repo.nii.ac.jp:00028705,
 author = {笠原, 勇二 and Kasahara, Yuji},
 issue = {10},
 journal = {Proceedings of the Japan Academy. Ser. A, Mathematical sciences},
 month = {Dec},
 note = {The asymptotic behavior of the spectral function of a one-dimensional second-order differential operator is discussed. We give a necessary and sufficient condition in order that the spectral function varies regularly with index 1. The condition is closely related to the class Γ which appears in the de Haan theory.},
 pages = {173--177},
 title = {Spectral function of Krein’s and Kotani’s string in the class Γ},
 volume = {88},
 year = {2012}
}