1. Carmeli, M. 1982,Classical Fields: General Relativity and Gauge Theory (John Wiley and Sons, New York).
2. Chandrasekhar, S.1965, Astrophys. J.,142, 1488.
3. Chandrasekhar, S. 1969,Ellipsoidal Figures of Equilibrium, (Yale University Press, New Haven).
4. Clarke, C. J. S., Sciama, D. W. 1971,Gen. Rel. Grav.,2, 331.
5. Contopoulos, G., Spyrou, N. 1976,Astrophys.J.,205, 592.