The Atmospheres of Early-Type Stars, Proceedings of a Workshop Organized Jointly by the UK SERC's Collaborative Computational Project No. 7 and the Institut Für Theoretische Physik und Sternwarte, University of Kiel. Held at the University of Kiel, Germany, 18-20, 1991. Lecture Notes in Physics, Vol. 401, edited by U. Heber and C. S. Jeffery. Springer-Verlag, Berlin Heidelberg New York, 1992., p.122