A generalization of the exponential sampling series and its   approximation properties
  Here we introduce a generalization of the exponential sampling series of optical physics and establish pointwise and uniform convergence theorem, also in a quantitative form. Moreover we compare the error of approximation for Mellin band-limited functions using both classical and generalized exponential sampling series. 
Carlo Bardaro, Loris Faina, Ilaria Mantellini
math.FA