Following the availability of the lists of the most prolific authors in CSD and ICSD, you may find now the list of authors as selected in ICSD by REM=RVP (using the Rietveld method : more than 5000 entries in the ICSD, release 1998-1). http://pcb4122.univ-lemans.fr/icsd/icsdrvp.txt Believe me or not, but there is no paper from Hugo Rietveld himself. More than 3000 authors are listed. Many different way to write the (probably) same name are responsible of errors which were not all corrected. For instance : zur Loye H - C zur=Loye H - C Zur=Loye H - C zur=Loye H-C or Saez - Puche R Saez Puche R Saez-Puche R Saez-Punche R etc. All the best Armel Le Bail - Université du Maine, Laboratoire des Fluorures, CNRS ESA 6010, Av. O. Messiaen, 72085 Le Mans Cedex 9, France http://www.cristal.org/