Bessel summation formulae and operational methods (Q704179)

The authors fill a gap which has been left open in their previous work [On new families of summation formulae of ordinary and generalized Bessel functions, Int. Math. J. 4, 239--246 (2003)], dealing with operational methods applied to summation formulae of Bessel type functions. In particular, by this operational method the authors derive families of generating functions of ordinary and generalized Bessel functions.