@article{etna_vol11_pp121-130, author = {R. Guti\'errez and J. Rodriguez and A. J. S\'aez}, title = {Approximation of hypergeometric functions with matricial argument through their development in series of zonal polynomials}, journal = {Electron. Trans. Numer. Anal.}, volume = {11}, year = {2000}, pages = {121--130}, }