Birational maps preserving the contact structure on   $\mathbb{P}^3_\mathbb{C}$
  We study the group of polynomial automorphisms of $\mathbb{C}^3$ (resp. birational self-maps of $\mathbb{P}^3_\mathbb{C}$) that preserve the contact structure. 
Dominique Cerveau, Julie D\'eserti
math.AG