Articles published or accepted for publication:

 [12] An analytic characterization of the eigenvalues of self-adjoint extensions J. Funct. Anal. 247 (2007) 607-640. pdf (with Jussi Behrndt) [11] Generalized resolvents of a class of symmetric operators in Krein spaces accepted for publication in Oper. Theory Adv. Appl. (with Jussi Behrndt and Carsten Trunk) [10] Minimal models for Nκ\infty;-functions Oper. Theory Adv. Appl. 163 (2005) 97-135. pdf (with Aad Dijksma and Yuri Shondin) [9] Generalized zero and poles of Nκ-functions: On the underlying spectral structure Methods Funct. Anal. Topology. , 12 (2006), no.2, 131-150. pdf (with Seppo Hassi) [8] A characterization of generalized poles of generalized Nevanlinna functions Math. Nachr. 279 (2006), No.\,8, 891-910. pdf [7] Reflectionless potentials and point interactions in Pontryagin spaces Lett. Math. Phys. 73 (2005), no.2, 109-122. pdf (with Pavel Kurasov) [6] Scalar generalized Nevanlinna functions: realizations with block operator matrices Oper. Theory Adv. Appl. 162 (2005) 253-267. pdf (with Matthias Langer) [5] Minimal realizations of scalar generalized Nevanlinna functions related to their basic factorization Oper. Theory Adv. Appl. 154 (2004) 69-90, Birkhäuser, Basel. pdf (with Aad Dijksma, Heinz Langer, and Yuri Shondin) [4] About generalized zeros of non-regular generalized Nevanlinna functions Integr. equ. oper. theory 45 (2003) 461-473. pdf [3] A factorization of regular generalized Nevanlinna functions Integr. equ. oper. theory 43 (2002) 326-345. pdf [2] A factorization result for generalized Nevanlinna functions of the class Nκnxn Integr. equ. oper. theory 36 (2000) 121-125. pdf (with Aad Dijksma, Heinz Langer, and Yuri Shondin) [1] A class of 2x2-matrix functions Glasnik Matematicki. Serija III. Croatian Math. Soc., Zagreb. Vol. 34 ( 55 ) (2000) 149-160. pdf (with Heinz Langer)

Further publications:

 [F4] On generalized Nevanlinna functions Habilitation thesis at the TU Vienna 2006. [F3] Generalized poles and zeros of generalized Nevanlinna functions - a survey Proceedings of AIT 2005, Vaasa, Finnland. pdf [F2] Factorization Results for Generalized Matrix Nevanlinna Functions PhD thesis at the TU Vienna 1999. [F1] Einige Betrachtungen zur Linearisierung von holomorphen Operatorfunktionen Diploma thesis at the TU Vienna 1996.

Editorial work:

 [E1] Operator Theory and Indefinite Inner Product Spaces, edited by M.Langer, A.Luger, and H.Woracek. Operator Theory: Advances and Applications, Vol.163 (2006), Birkhäuser Verlag, Basel, xxxii+379pp.

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