Berberian, S. K. The Weyl spectrum of an operator. (English) Zbl 0203.13401 Indiana Univ. Math. J. 20, 529-544 (1970). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 40 Documents PDF BibTeX XML Cite \textit{S. K. Berberian}, Indiana Univ. Math. J. 20, 529--544 (1970; Zbl 0203.13401) Full Text: DOI