On Regular-analytic Functions with Values in a Clifford Algebra. R. DELANGHE — 1970 Mathematische Annalen
Decomposable systems of differential operators and generalized inverses Delanghe, R. — 1984 Proceedings of the 12th Winter School on Abstract Analysis
Cauchy-Kowalewski theorems in Clifford analysis : a survey Brackx, F.; Delanghe, R.; Sommen, F. — 1984 Proceedings of the 11th Winter School on Abstract Analysis
Generalized inverses of elliptic systems of differential operators with constant coeffcients and related Reduce programs for explicit calculations Brackx, F.; Delanghe, R.; van Hamme, J. — 1987 Proceedings of the Winter School "Geometry and Physics"