The PhD Thesis (Université de Montpellier II - Science et Techniques du Languedoc, Montpellier, France; supervisors: Prof. Y. Escoufier) is now freely available in PDF-format. It can, for instance, be read with Adobe Acrobat Reader or GhostScript. The thesis is only available as a single PDF file of the entire book, but several versions are available.
P.M. Kroonenberg
Leiden Institute of Education and Child Studies, Leiden University
Wassenaarseweg 52, 2333 AK Leiden, The Netherlands
E-mail: kroonenb at fsw.leidenuniv.nl