Neumann-like integrable models
  A countable class of integrable dynamical systems, with four dimensional phase space and conserved quantities in involution (H\_n,I\_n) are exhibited. For $n=1$ we recover Neumann sytem on T*S^2. All these systems are also integrable at the quantum level. 
Galliano Valent (LPTHE, Lumimath), Hamed Ben Yahia (LPTHE)