1. Magic sum rules for confinement potentials
2. Talk Bielefeld Encounters in Physics and Mathematics VII (1985, CERN Preprint TH. 4257 ( 1985 ), published in: “Path integrals from meV to MeV”, ed., World Scientific, Singapore (1986),
3. Talk Advanced Research Workshop, Villa Olmo, Como (1985), CERN Preprint TH. 4346 (1985), published in: “Fundamental aspecte of quantum theory”, and , eds., Plenum, New York (1986).
4. Zur Theorie allgemeiner Zetafunctionen