1. S Kaur and C G Mahajan,Pramana — J. Phys. 59, 479 (2002)
2. These relations are also given by Herzberg [2]. However, there is a difference in the signs of Y11 and Y20. The matter was brought to the knowledge of the publisher of the book and he agreed to correct the expressions in the next print of the book
3. G Herzberg,Molecular spectra and molecular structure I. Spectra of diatomic molecules (Van Nostrand Reinhold Co., New York, 1950) p. 109
4. S Chandra,Pramana — J. Phys. 56, C585 (2001)
5. A L G Rees,Proc. Phys. Soc, London A59, 998 (1947)