Ask Lynn van Eyck. H. -- Howard Flack http://www.unige.ch/crystal/ahdf/Howard.Flack.html Laboratoire de Cristallographie Phone:(+41 22) 702 62 49 24 quai Ernest-Ansermet mailto:Howard.Flack at cryst.unige.ch CH-1211 Geneva 4, Switzerland Fax:(+41 22) 781 21 92