பேரரக்கன் (விண்மீன்) (Tamil Wikipedia)

Analysis of information sources in references of the Wikipedia article "பேரரக்கன் (விண்மீன்)" in Tamil language version.

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archive.org

Henroteau, F. (1926). "An international co-operation for the photographic study of Cepheid variables". Popular Astronomy 34: 493. Bibcode: 1926PA.....34..493H. https://archive.org/details/sim_popular-astronomy_1926-10_34_8/page/493.
Shapley, Harlow (1925). "S Doradus, a Super-giant Variable Star". Harvard College Observatory Bulletin No. 814 814: 1. Bibcode: 1925BHarO.814....1S.
Payne, Cecilia H.; Chase, Carl T. (1927). "The Spectrum of Supergiant Stars of Class F8". Harvard College Observatory Circular 300: 1. Bibcode: 1927HarCi.300....1P.