Operator Theory, Function Spaces and Applications, OTFUSA2005, Conference in honour of  F.-O. Speck  (member of the group) to celebrate his 60th Birthday, Aveiro, Portugal, June 7-9, 2005.  Organizers: A. Caetano (U.Aveiro), L. Castro (U.Aveiro) (chairman of the organizing committee), A. Moura Santos, E. Rocha (U.Aveiro), J. Santos (U.Aveiro), E. Staicu (U.Aveiro). 

Operator Theory in Analysis and Engineering, Workshop in honour of Prof. Dr. Erhard Meister, 
Darmstadt, Germany, June 2003.  Organizers: H.-D. Alber, R. Farwig (TU Darmstadt), F.-O. Speck 
(Lisboa). Proceedings  published in Mathematische Nachrichten 269-270, 2004.

International Conference on Factorization, Singular Operators and Related Topics, FSORP-Madeira 2002, in honour of Georgii Litvinchuk (member of the group) to celebrate his 70th Birthday;
University of Madeira, January 28 - February 1, 2002.
S. Samko (chairman of the organizing committee), V. Kravchenko, A.F. dos Santos, F.S. Teixeira, A.B. Lebre, A.M. Santos (co-organizers). Proceedings published by Kluwer Academic Publishers.

IWOTA-Portugal 2000, University of Algarve, September 12-15, 2000.
A.F. dos Santos (chairman of the organizing committee), F.-O. Speck, A.B. Lebre, R. Picken, V. Kravchenko and N. Manojlovic (co-organizers).
Proceedings in the series "Operator Theory: Advances and Applications", vol. 142, published by Birkhäuser.

Summer School on Factorization and Integrable Systems, University of Algarve, September 6-9, 2000.
A.F. dos Santos and N. Manojlovic (co-organizers).
Lectures with the title "Factorization and Integrable Systems" in the series "Operator Theory: Advances and Applications", vol. 141, published by Birkhäuser.