1. S.I. Vinitsky, S.P. Merkurèv, I.V. Puzynin and V.M. Suslov, Sov. J. Nucl. Phys. 51 (1990) 641.
2. S.I. Vinitsky, B.L. Markovski and A.A. Suzko, Sov. J. Nucl. Phys. 53 (1992) 650;
3. B. Markovski and S. Vinitsky (eds.),Topological Phases in Quantum Theory (World Sientific, Singapore, 1989);
4. S.I. Vinitsky, V.L. Derbov et al., Sov. Phys. Uspekhi 33(6) (1990) 403;
5. Yu.A. Kuperin and Yu.B. Melnikov, Sov. Math. Sborn. 182 N2 (1991) 2236.