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References
1
1Pierce, A. K. and Waddell, J. H., Mem. Roy. Astr. Soc, 58, 89 (1961).Google Scholar
2
2Curtis, G. W. and Jefferies, J. T., Proc. Second Harvard Smithsonian Conference on Stellar Atmospheres, p. 297 (1965).Google Scholar
3
3White, O. R., Sacramento Peak Observatory Solar Research Note No. 26 (1968).Google Scholar