Sudarev, J. N. Some asymptotic spectral properties of singular operators. (English) Zbl 0175.40203 Math. Notes 4(1968), 592-594 (1969). PDF BibTeX XML Cite \textit{J. N. Sudarev}, Math. Notes 4, 592--594 (1969; Zbl 0175.40203) Full Text: DOI
Sudarev, Yu. N. On certain spectral asymptotic properties of singular operators. (Über gewisse spektrale asymptotische Eigenschaften singulärer Operatoren.) (Russian) Zbl 0157.42103 Mat. Zametki 4, 169-172 (1968). MSC: 35P20 35J75 47F05 PDF BibTeX XML Cite \textit{Yu. N. Sudarev}, Mat. Zametki 4, 169--172 (1968; Zbl 0157.42103)