1 “...During July 1991. a group of 99 physicists from 57 laboratories in 27 countries met in Erice...”

2 “...During July-August 1989. a group of 75 physicists from 52 laboratories in 16 countries met in Erice...”

3 “...During July 1990. a group of 83 physicists from 43 laboratories in 21 countries met in Erice...”