SpringerLink (Online service), Langer, M., Luger, A., & Woracek, H. (2006). 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. Birkhäuser Basel.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Matthias Langer, Annemarie Luger, και Harald Woracek. 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 Basel, 2006.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), 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. Birkhäuser Basel, 2006.
