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.