1. A Finite Classical Model of the Electron with Torsion and Strong Gravity
2. ; : Introduction to Gravitation. Singapore: World Scientific, 1985;
3. see also : Proceed. Einstein Centenary Symposyum, Nagpur, India 1980, p. 69 and:
4. On General Relativity [EFI] (ed. by S. Pandey) 1983, p. 117.