1. For a review, see,F. Gürsey:Acta Phys. Auslriaca Suppl.,5, 186 (1968).
2. A. Ebrahim andM. Serdaroglu:Nuovo Cimento,21 A, 249 (1974).
3. F. Gürsey andM. Serdaroglu:Nuovo Cimento,7 A, 584 (1972);9 A, 263E (1972).
4. A. Ebrahim:Canonical SU4 xSU4pseudoscalar meson matrix, to be published inLett. Nuovo Cimento.
5. A. Ebrahim :Group theoretical structure of chiral SUn x SUnrepresentation mixing, to be published inLett. Nuovo Cimento.