Deformation of $\mathfrak{osp}(2|2)$-Modules of Symbols
  We classify deformations of $\mathfrak{osp}(2|2)-$module structure on the spaces of symbols $\mathfrak{S}_d^2$ of differential operators acting on the space of weighted densities $\mathfrak{F}_{\lambda}^{2}$. 
Mabrouk ben Ammar and Wafa Mtaouaa
math.RT