This photo was taken by Sergio Bittanti at the end of the Lectio Magistralis given by Antonio Ruberti (in the center of the front row) in Rome, November 8, 1999. The picture features a large group of Italian control scientists attending this last lecture of Professor Ruberti, who was born in 1927 and died in 2000.

For more information see Three Italian Scholars (dedicated to Evangelisti, Quazza and Ruberti).