A geometric approach to integrability conditions for Riccati equations. Carinena, Jose F.; de Lucas, Javier; Ramos, Arturo — 2007 Electronic Journal of Differential Equations (EJDE) [electronic only]
Recent applications of the theory of Lie systems in Ermakov systems. Cariñena, José F.; de Lucas, Javier; Rañada, Manuel F. — 2008 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]