Hao, Xiaoling; Sun, Jiong; Zettl, Anton The spectrum of differential operators and square-integrable solutions. (English) Zbl 1271.34084 J. Funct. Anal. 262, No. 4, 1630-1644 (2012). MSC: 34L05 34L15 47E05 34B16 47A10 PDF BibTeX XML Cite \textit{X. Hao} et al., J. Funct. Anal. 262, No. 4, 1630--1644 (2012; Zbl 1271.34084) Full Text: DOI
Mogilevskii, Vadim Symmetric operators with real defect subspaces of the maximal dimension. Applications to differential operators. (English) Zbl 1233.47019 J. Funct. Anal. 261, No. 7, 1955-1968 (2011). Reviewer: Petr Zemanek (Brno) MSC: 47B25 34E05 47E05 PDF BibTeX XML Cite \textit{V. Mogilevskii}, J. Funct. Anal. 261, No. 7, 1955--1968 (2011; Zbl 1233.47019) Full Text: DOI arXiv
Qi, Jianggang; Chen, Shaozhu On an open problem of Weidmann: essential spectra and square-integrable solutions. (English) Zbl 1237.47046 Proc. R. Soc. Edinb., Sect. A, Math. 141, No. 2, 417-430 (2011). Reviewer: Vassilis G. Papanicolaou (Athena) MSC: 47E05 34B20 34L05 PDF BibTeX XML Cite \textit{J. Qi} and \textit{S. Chen}, Proc. R. Soc. Edinb., Sect. A, Math. 141, No. 2, 417--430 (2011; Zbl 1237.47046) Full Text: DOI