Recursion formulas for Appell's hypergeometric function F2 with some applications to radiation field problems

Opps, Sheldon B., et al. “Recursion Formulas for Appell’s Hypergeometric Function F2 With Some Applications to Radiation Field Problems”. Applied Mathematics and Computation, vol. 207, no. 2, 2009, pp. 545-58, https://doi.org/10.1016/j.amc.2008.11.006.