Lie symmetries of radiation natural convection flow past an inclined   surface
  Applying Lie symmetry method, we find the most general Lie point symmetries group of the radiation natural convection flow equation(RNC). Looking the adjoint representation of the obtained symmetry group on its Lie algebra, we will find the preliminary classification of its group-invariant solutions. 
Mehdi Nadjafikhah, Maryam Abdolsamadi and Elahe Oftadeh
math.AP