%0 Journal Article %A M. Vuorinen %T Singular values, Ramanujan modular equations, and Landen transformations %J Studia Mathematica %D 1996 %P 221-230 %V 121 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-121-3-221-230/ %R 10.4064/sm-121-3-221-230 %G en %F 10_4064_sm_121_3_221_230