1. J. A. de Azcarraga, A. M. Perelomov, and J. C. Perez Bueno, J. Phys. A: Math. Gen. 29, 7993 (1996).
2. A. V. Brailov, Mosc. Univ. Math. Bull. 38(1), 57–61 (1983); translation from Vestn. Mosk. Univ., Ser. I 1, 47 (1983).
3. T. J. Courant, Trans. Amer. Math. Soc. 319, 631 (1990).
4. C. W. Curtis and I. Reiner, Representation theory of finite groups and associative algebras (New York. John Wiley & Sons Ltd., 1988).
5. L. E. Evtushik, Yu. G. Lumiste, N. M. Ostianu, and A. P. Shirokov, J. Sov. Math. 14, 1573 (1980); translation from Itogi Nauki Tekh., Ser. Probl. Geom. 9 (1979).