1. Brackx, F., Delanghe, R., and Sommen, F., Clifford Analysis, Pitman, Boston, London, Melbourne, 1982.
2. Eriksson-Bique, S.-L., k-hypermonogenic functions. In Progress in Analysis, Vol I, World Scientific (2003), 337–348.
3. Eriksson, S.-L., Integral formulas for hypermonogenic functions, Bull. Bel. Math. Soc. 11 (2004), 705–717.
4. Eriksson, S.-L., Cauchy-type integral formulas for k-hypermonogenic functions. To appear in Proceedings of the 5th ISAAC conference, Catania, Italy 2005.
5. Eriksson-Bique, S.-L. and Leutwiler, H., On modified quaternionic analysis in ℝ3, Arch. Math. 70 (1998), 228–234.