Brackx, Freddy; Pincket, Willy: Domains of biregularity in Clifford analysis.
(English).
In:
Frolík, Z., Souček, V.
and Vinárek, J. (eds.): Proceedings of the Winter School "Geometry and Physics".
Circolo Matematico di Palermo, Palermo, 1985.
pp. [21]-35