On the $C^{\infty}$ version of the reflection principle for mappings   between CR manifolds
  We prove a smooth version of the classical Schwarz reflection principle for CR mappings between an abstract CR manifold $M$ and a generic CR manifold embedded in euclidean complex space. As a consequence of our results, we settle a conjecture of X. Huang and provide a solution to a question raised by Forstneric. 
Shiferaw Berhanu, Ming Xiao
math.CV