1. Dirac P. A. M.,Lectures on Quantum Mechancis (Yeshiva University, New York, N.Y.) 1964.
2. Monographs Series;P. A. M. Dirac,1966
3. Hanson A., Regge T. andTeitelboim C.,Constrained Hamiltonian Systems (Accademia dei Lincei, Rome) 1976.
4. Marmo G., Mukunda N. andSamuel J.,Riv. Nuovo Cimento,6 (1983) 1.
5. Lect. Notes Phys., New Ser. m: Monographs;G. Esposito,1994