### Available Preprints:

 F. Kleefeld: On some meaningful inner product for real Klein-Gordon fields with positive semi-definite norm quant-ph/0606070 Internal preprint number: FK-2006-3 (accepted for publication in Czech J. Phys.) The Nature of sigma, kappa, a0(980) and f0(980) hep-ph/0606022 Internal preprint number: FK-2006-2 (accepted for publication in Phys. Lett. A) Pion chiral symmetry breaking in the quark-level linear sigma model and chiral perturbation theory hep-ph/0601196 Internal preprint number: FK-2006-1 From the Kappa via the D*S0(2317) to the ChiC0: connecting light and heavy scalar mesons (See also: http://cft.fis.uc.pt/eef/animations/start.html ) hep-ph/0509351 Internal preprint number: FK-2005-4 (accepted for publication in Phys. Rev. D) Non-Hermitian Quantum Theory and its Holomorphic Representation: Introduction and Applications hep-th/0408097 Internal preprint number: FK-2004-3 (Invited oral contribution to the 2nd Int. Workshop on "Pseudo-Hermitian Hamiltonians in Quantum Physics II", 14.-16.6.2004, Villa Lanna, Prague, Czech Republic) Non-Hermitian Quantum Theory and its Holomorphic Representation: Introduction and Some Applications hep-th/0408028 Internal preprint number: FK-2004-1 (to be submitted for publication (after some revision!)) Is a quantum theory of resonances really time asymmetric? hep-th/0312027 Proceedings of CFIF 2003 workshop on "Time Asymmetric Quantum Theory: the Theory of Resonances", 23.-26.7.2003, CFIF, IST, Lisbon, Portugal Internal preprint number: FK-2003-5 (to be published in proceedings, if there will be any) Model-independent definition and determination of electromagnetic formfactors and multipole moments nucl-th/0012076 Internal preprint number: FK-2000-3 Approximate field-theoretic method of describing scattering and production processes of composite particles by asymptotic in- and outgoing Bethe-Salpeter states (Internal report, 18 pages) Internal preprint number: FAU-TP3-99 / 2 Protoninduced $\pi^0$-, $\eta$- and $K^+$-Production at Threshold Internal preprint number: FAU-TP3-98 / 17 (Preprint and poster-contribution to the Eighth International Conference on the Structure of Baryons (Baryons '98), University of Bonn, Germany, September 22-26, 1998 Trace evaluation of matrix determinants and inversion of 4 x 4 matrices in terms of Dirac covariants hep-ph/9806415 Internal preprint number: FAU-TP3-97 / 4 Bethe-Salpeter-Approach to Relativistic Two-Fermion-Systems with a Separable Nonstatic Interaction nucl-th/9806058 Internal preprint number: FAU-TP3-96 / 2 (See also: Few-Body Systems 15 (1993) N24)