பரவளைவு (Tamil Wikipedia)

Analysis of information sources in references of the Wikipedia article "பரவளைவு" in Tamil language version.

refsWebsite

Global rank Tamil rank

3books.google.com

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916^th place

892^nd place

books.google.com

Wilson, Ray N. (2004). Reflecting Telescope Optics: Basic design theory and its historical development (2 ed.). Springer. p. 3. ISBN 3-540-40106-7., Extract of page 3
Stargazer, p. 115.
Stargazer, pp. 123 and 132

utexas.edu

farside.ph.utexas.edu

Fitzpatrick, Richard (July 14, 2007). "Spherical Mirrors". Electromagnetism and Optics, lectures. University of Texas at Austin. Paraxial Optics. Retrieved October 5, 2011. {{cite web}}: Unknown parameter |separator= ignored (|mode= suggested) (help)CS1 maint: extra punctuation (link)