%0 Journal Article %A P. G. L. Leach %A A. Karasu (Kalkanli) %A M. C. Nucci %A K. Andriopoulos %T Ermakov's Superintegrable Toy and Nonlocal Symmetries %J Symmetry, integrability and geometry: methods and applications %D 2005 %V 1 %U http://geodesic.mathdoc.fr/item/SIGMA_2005_1_a17/ %G en %F SIGMA_2005_1_a17