1 - L.U.R.E. - ORSAY (10.03.1986).
"Imperfections cristallines et méthode de RIETVELD: possibilités
actuelles"
2 - GALERNE 1986 - CAEN (29/09-03/10/1986).
"Analyse globale des spectres de diffraction de composés mal
cristallisés"
3 - UNIVERSITE DE VALENCE (ESPAGNE) - Juillet 1988.
"Ab initio crystal structure determination from powder diffraction
data."
4 - UNIVERSITE DE VALENCE (ESPAGNE) - Avril 1990.
"Twinning and superstructures: some recent examples of structure solution
from X-Ray diffraction".
5 - CONGRES INTERNATIONAL "POWDER DIFFRACTION", 16-19 Juillet 1990,
TOULOUSE.
"The practice of structure determination from powder data: how to succeed."
6 - CONGRES INTERNATIONAL "ACCURACY IN POWDER DIFFRACTION II" (APD-II),
26-29 Mai 1992, Gaithersburg, USA.
"Modelling Anisotropic Size/Microstrain in Rietveld Analysis"
7 - CONGRES INTERNATIONAL "SIZE - STRAIN'95", Août 1995, Slovaquie.
"Accounting for Size/Microstrain in Whole Powder Pattern Fitting".
8 - XVII Congress and General Assembly of the International Union
of Crystallography, August 8-17, 1996, Seattle, USA.
"VRML as a tool for exploring
complex structures".
9- ACA'97, July 19-25, 1997, St. Louis, Missouri, USA.
"Standard and special strategies
in structure determination from powder data".
10- 47th Annual Denver X-ray Conference, August 3-7, 1998, Colorado
Springs, Colorado, USA.
"New Developments in Microstructure
Analysis via Rietveld Refinement".
11- ECM-18, August 15-20, 1998, Prague, République Tchèque.
"Trends in Structure Determination
by Powder Diffractometry".