MathSciNet bibliographic data MR2280849 01A75 Ramanujan, S. Modular equations and approximations to $\pi$$\pi$ [Quart. J. Math. 45 (1914), 350–372]. Collected papers of Srinivasa Ramanujan, 23–39, AMS Chelsea Publ., Providence, RI, 2000. Links to the journal or article are not yet available

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