Presymplectic high order maximum principle

Article: 
Presymplectic high order maximum principle
Authors: 
M. Barbero Liñán, M.C. Muñoz Lecanda
Journal: 
Rev. R. Acad. Cien. Serie A. Mat
Volume: 
Pages: 
Year: 
2011
URL: 
http://www.springerlink.com/content/7277525133665082/