On two superintegrable nonlinear oscillators in N dimensions

Article: 
On two superintegrable nonlinear oscillators in N dimensions
Authors: 
Angel Ballesteros, Alberto Enciso, Francisco J. Herranz, Orlando Ragnisco, Danilo Riglioni
Journal: 
preprint-arxiv
Year: 
2010
URL: 
http://arxiv.org/abs/1010.3358