An analog of Chang inversion formula for weighted Radon transforms in   multidimensions
  In this work we study weighted Radon transforms in multidimensions. We introduce an analog of Chang approximate inversion formula for such transforms and describe all weights for which this formula is exact. In addition, we indicate possible tomographic applications of inversion methods for weighted Radon transforms in 3D. 
Fedor Goncharov (MIPT), Roman Novikov (CMAP)
math.FA