Kummer, Sebastian, Grün, Oskar, Jammernegg, Werner (2) Antonova, Roumiana Hristova, Slaveva, Vassilena Iordanova, Slavova, Tihomira Encheva (1) A. Elmasri, Ramez, Navathe, Shamkant B. (1) Wessler, Markus (1) Bofinger, Peter (1)