North Atlantic Treaty Organization.Advanced Study Insitute on Digital Image Processing and Analysis, North Atlantic Treaty Organization.Advanced Study Insitute on Digital Image Processing and Analysis,Bonas.1976 North Atlantic Treaty Organization.Advanced Study Insitute on Pattern Recognition-Theory and Applica North Atlantic Treaty Organization,Advanced Study Institute on Process and Device Modeling fo rInteg North Atlantic Treaty Organization.Advanced Study Insitute on Pattern Recognition-Theory and Application,Bandol.1975 North Atlantic Treaty Organisation.Acvanced Study Institute on Coherent Optical Engineering, North Atlantic Treaty Organization.Advanced Study Instutute,Erice(sicity) North Atlantic Treaty Organization.Advanced Study Institute,Berlin,1976. North Atlantic Treaty Organization.Advanced Study Institute,Rome,1975 North Atlantic Treaty Organizations.Advanced Study Institute,Liege,1976