Lagrangians of a non-mechanical type for second order Riccati and Abel equation

Article: 
Lagrangians of a non-mechanical type for second order Riccati and Abel equation
Authors: 
J.F. Cariñena, M.F. Rañada
Journal: 
Mon. Acad. Cienc. Zaragoza
Volume: 
33
Pages: 
165–177
Year: 
2010
URL: 
http://www.unizar.es/acz/05Publicaciones/Monografias/MonografiasPublicadas/Monografia33/165.pdf