Applications of nonlocal constants of motion in Lagrangian Dynamics
  We give a recipe to generate "nonlocal" constants of motion for ODE Lagrangian systems and we apply the method to find useful constants of motion for dissipative system, for the Lane-Emden equation, and for the Maxwell-Bloch system with RWA. 
Gianluca Gorni, Gaetano Zampieri
math-ph math.MP