Col Reference --- --------- R1 Sujatha S., Babu G.S.D 2003, Bull. Astr. Soc. India 31, 9 R2 Carraro G., Costa E. 2007, Astron. Astrophys. 464, 573 Back to the form
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R1 Sujatha S., Babu G.S.D 2003, Bull. Astr. Soc. India 31, 9
R2 Carraro G., Costa E. 2007, Astron. Astrophys. 464, 573