by VASILEV, VASIL D, PETKOV, PETKO G, JOTOV, MIKHAIL V, PESHLEJSKI, PETKO A, DIMITROV, KONSTANTIN D, KHARALAMBIEV, KHARALAMBI E
Year of Publication 31.07.1996

by NINOV, NINO V, SARTMADZHIEV, KRASTJU G, GARDEVSKA, IVA M, DIMITROV, KONSTANTIN D, STOEV, IVAN S, DENCHEV, VESELIN D, MITOV, IVAN G
Year of Publication 15.01.1993

by BONEV,ASEN N, LAKOVSKA,JJOSHKA L, DIMITROV,KONSTANTIN D
Year of Publication 15.03.1982

by LILOV,MARIN V, STOJANOV,VASIL D, DIMITROV,KONSTANTIN D
Year of Publication 10.01.1978

by LILOV,MARIN V, NINOV,NINO V, ATANASOV,STEFAN.S, DIMITROV,KONSTANTIN D
Year of Publication 15.06.1978

by PETKOV,STANCZO S, GANCZEV,NIKOLA G, BOJADZHIEV,STEFAN G, DIMITROV,KONSTANTIN D
Year of Publication 10.11.1977