JavaView picture of the Bessel function in two variables.

References

  1. Toshinori Oaku, Yoshinao Shiraki, Nobuki Takayama, Algebraic Algorithms for D-modules and Numerical Analysis, Z.M.Li, W.Sit (editors), Computer Mathematics, Proceedings of the sixth asian symposium, 23--39, World scientific, 2003. PDF (preliminary version)