Klaus Bothe, Humboldt University, Berlin, Germany
Ulrich Sacklowski, Humboldt University, Berlin, Germany
Kay Schuetzler, Humboldt University, Berlin, Germany
Stanimir Stoyanov, University "Paisii Hilendarski", Plovdiv, Bulgaria
Asya Stoyanova-Doytcheva, University "Paisii Hilendarski", Plovdiv, Bulgaria
Emil Doytchev, University "Paisii Hilendarski", Plovdiv, Bulgaria
Malina Georgieva, University "Paisii Hilendarski", Plovdiv, Bulgaria
Bojan Botev, student, University "Paisii Hilendarski", Plovdiv, Bulgaria
Radin Gospodinov, student, University "Paisii Hilendarski", Plovdiv, Bulgaria
Katerina Zdravkova, University "Sts. Cyril and Methodius", Skopje, Macedonia
Vangel Ajanovski, University "Sts. Cyril and Methodius", Skopje, Macedonia
Anastas Misev, University "Sts. Cyril and Methodius", Skopje, Macedonia
Dragan Bojic, Faculty of Electrical Engineering, University of Belgrade, Belgrade, Yugoslavia
Dusan Tosic, Faculty of Mathematics, University of Belgrade, Belgrade, Yugoslavia
Nenad Mitic, University of Belgrade, Belgrade, Yugoslavia
Nenad Grujovic, University of Kragujevac, Kragujevac, Yugoslavia
Radovan Slavkovic, University of Kragujevac, Kragujevac, Yugoslavia
Predrag Stanimirovic, University of Nis, Nis, Yugoslavia
Goran Kljajic, University of Nis, Nis, YugoslaviaBorislav Josanov, Higher Business School, Novi Sad, Yugoslavia
Zoran Budimac, University of Novi Sad, Novi Sad, Yugoslavia
Mirjana Ivanovic, University of Novi Sad, Novi Sad, Yugoslavia
Zoran Putnik, University of Novi Sad, Novi Sad, Yugoslavia
Natasa Ibrajter, University of Novi Sad, Novi Sad, Yugoslavia
Mihajlo Kresojevic, student, University of Novi Sad, Novi Sad, Yugoslavia
Ivan Pribela, student, University of Novi Sad, Novi Sad, Yugoslavia