Regions of Convergence for Hypergeometric Series in Three Variables. Per W. Karlsson — 1974 Mathematica Scandinavica
Some Hypergeometric Transformations and Generating Functions. Per W. Karlsson — 1973 Mathematica Scandinavica
Some Reduction Formulas for Hypergeometric Functions. Per W. Karlsson — 1972 Mathematica Scandinavica
Reduction of Certain Generalized Kampé de Fériet Functions. Per W. Karlsson — 1973 Mathematica Scandinavica
On the representation of Lauricella functions by Eulerian integrals. Per W. Karlsson — 1976 Mathematica Scandinavica