This volume features the proceedings of the NATO AR Workshop held in Kishinev, the capital of Moldova, a fom1er Soviet Republic in the South Eastern Europe. OUiing 3 working days 26 reports were presented, 8 of them by, or in collaboration with, speakers from Kishinev. The reports arc presented in the order they were given at the Workshop. As the topic was rather wide-ranged, all the sittings were plenmy. The opening communication was made by the Mayor of Kishinev S. Urckian, who was the Chainnan of the Organizing Committee. It was followed by other reports of general orientation. The second...