by KRANOLD, REINER, SAMUNEVA, BISERKA I, TRAPALIS, KHRISTOS KH, VASILEV, SASHO V, KOZHUKHAROV, VLADIMIR S
Year of Publication 15.11.1990

by SAMUNEVA, BISERKA I, TRAPALIS, KHRISTOS KH, KOZHUKHAROV, VLADIMIR S, KUNEV, DINKO K
Year of Publication 15.11.1989

by KOZHUKHAROV,VLADIMIR S, MARINOV,MARIN R, JJORDANOVA,ILINA L, TRAPALIS,KHRISTOS KH
Year of Publication 15.10.1985