I wonder if it is possible to add the capability of computing the Bivariate Meijer G
function which is defined by means of a two-fold contour integral in the complex plane .
This is a very interesting possibility, indeed, because, as it is well known, the integral of
the product of three Meijer G functions can be expressed in closed form by means of the bivariate
Meijer G function. Many useful integrals can be computed in this way. For the time being, I am a
Maple 10 user, however I am not informed about whether such a feature was added in Maple 11 or 12.
It should also be noted that Mathematica provides a Meijer G function of two variables, however this is
defined by means of a single contour integral and in fact can be expressed via conventional Meijer G functions.
 Agarwal, R.P.: An extension of Meijer's G-function. Proc. Nat. Inst. Sci. India, Part A 31,. 536- 546 (1965)