Bibliography of Heinz Langer. (English) Zbl 1094.47001 Langer, Matthias (ed.) et al., Operator theory and indefinite inner product spaces. Presented on the occasion of the retirement of Heinz Langer in the colloquium on operator theory, Vienna, March 2004. Basel: Birkhäuser (ISBN 3-7643-7515-9/hbk). Operator Theory: Advances and Applications 163, xxx-xxxii (2006). MSC: 47-00 01A70 PDFBibTeX XMLCite Oper. Theory: Adv. Appl. 163, xxx-xxxii (2006; Zbl 1094.47001)
Dijksma, Aad; Gohberg, Israel Langer and his work. (English) Zbl 0910.01004 Dijksma, A. (ed.) et al., Contributions to operator theory in spaces with an indefinite metric. The Heinz Langer anniversary volume on the occasion of his 60th birthday. Basel: Birkhäuser. Oper. Theory, Adv. Appl. 106, 1-22 (1998). MSC: 01A70 01A65 PDFBibTeX XMLCite \textit{A. Dijksma} and \textit{I. Gohberg}, in: Contributions to operator theory in spaces with an indefinite metric. The Heinz Langer anniversary volume on the occasion of his 60th birthday. Basel: Birkhäuser. 1--22 (1998; Zbl 0910.01004)