@inproceedings{, author={Kocsor, Andr{\'a}s and Dombi, J{\'o}zsef and B{\'a}lint, Imre}, title={How to solve matrix-eigenvalue problems by optimizations of various functional inequalities?}, booktitle={IMACS/GAMM International Symposium on Scientific Computing, Computer Arithmetic and Validated Numerics (SCAN-98), Volume of extended abstract}, year={1998}, month={September}, address={Budapest, Hungary} }