Klaus Bothe, Humboldt University, Berlin, Germany
Ulrich Sacklowski, Humboldt University, Berlin, Germany
Kay Schuetzler, Humboldt University, Berlin, Germany
Dragan Bojic , University of Belgrade, Belgrade, Yugoslavia
Zoran Budimac, University of Novi Sad, Novi Sad, Yugoslavia
Stanimir Stoyanov, University "Paisii Hilendarski", Plovdiv, Bulgaria
Katerina Zdravkova, University "Sts. Cyril and Methodius", Skopje, Macedonia