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3. N I Papanicolaou, N C Bacalis and D A Papaconstantopoulos,Handbook of calculated electron momentum distributions, Compton profiles and X-ray form factors of elemental solids (CRC Press, London, 1991)
4. U Mittal, Ph.D. thesis (unpublished) University of Rajasthan, Jaipur, (1993) Also see a review article; B K Sharma,Z. Naturforsch. A48, 334 (1993)
5. B K Sharma, U Mittal, B L Ahuja, S Perkkiö, S Manninen and T Paakkari, inPositron annihilation and Compton scattering edited by B K Sharma, P C Jain and R M Singru (Omega Scientific Pub., New Delhi, 1990) p. 261