by MARKOV, LJUBEN I, KISAOV, VESELIN D, KHRISTOVA, IRENA G, BORSHUKOV, DOBRIN G, MILANOVA, TONJA G, KALCHEV, STOJAN V
Year of Publication 15.10.1990

by KALCHEV,STOJAN V, POPOV,TODOR V, MITEV,STEFAN P, VACOVA,MELAGIJA V, KOLEV,KONSTANTIN G, GUZGUNOV,ANTON G, MOMERIN,KHRISTO A, RADOMIROV,RASHKO K
Year of Publication 15.05.1987

by KALCHEV,STOJAN V, TUMBEV,PETR I, PASHAMOV,PETKO G, KOLEV,KONSTANTIN G, KARTALOV,GEORGI P, MOMERIN,KHRISTO A, DIMITROV,IVAN D, GUZGUNOV,ANTON G
Year of Publication 15.08.1986

by KALCHEV,STOJAN V, KISOV,VESELIN D, GEORGIEV,GEORGI L, KOSTOV,MLADEN L, MARKOV,LJUBEN I, KOLEV,KONSTANTIN G, GUZGUNOV,ANTON G, RADOMIROV,RASHKO K
Year of Publication 15.01.1985

by KALCHEV,STOJAN V, KISOV,VESELIN D, GEORGIEV,GEORGI L, KOSTOV,MLADEN L, MARKOV,LJUBEN I, KOLEV,KONSTANTIN G, GUZGUNOV,ANTON G, KHADZHIDIMITROV,DIMITR I, RADOMIROV,RASHKO K
Year of Publication 15.01.1985

by KALCHEV,STOJAN V, KISOV,VESELIN D, KHADZHIPETROV,PETR K, KALEV,NUNCHO A, DAMJANOVA,VIKTORIJA G, BUROV,PETKO K, KOLEV,KONSTANTIN G, VELICHKOV,TRAJAN V, SIMEONOV,VENELIN S
Year of Publication 15.11.1984

by PAUNOV, STOJKO P, MARKOV, LJUBEN I, GEORGIEV, GEORGI A, TENEV, PETAR S, KISAOV, VESELIN D, SHISHKOV, PETAR A, SIMEONOV, LJUBOMIR KH, BONCHEV, PAVEL P, ALEKSIEV, ALEKSI P, STOJANOV, IVAN V, KALCHEV, STOJAN V, MILEV, KHRISTO S
Year of Publication 15.10.1991

by KALCHEV,STOJAN V, KISOV,VESELIN D, GEORGIEV,GEORGI L, GOCHEVA,BISTRA S, CANKOV,LJUBOMIR D, GELEVA,PENKA S, KOSTOV,MLADEN L, MARKOV,LJUBEN I, KOLEV,KONSTANTIN G, GUZGUNOV,ANTON G, RADOMIROV,RASHKO K
Year of Publication 15.08.1985

by BOZHINOV,BOZHIDAR A, TOPALOV,TIKHOMIR A, MITEV,STEFAN P, DOBREV,DOBRI D, VELICHKOV,ANTON I, VUTOV,LJUBOMIR A, KOLEV,KONSTANTIN G, GUZGUNOV,ANTON G, KALCHEV,STOJAN V, POPOV,TODOR V, CANKOV,LJUBOMIR D, MOMERIN,KHRISTO A, MANDALIEV,GEORGI M, KHADZHIDIMITROV,DIMITR I, RADOMIROV,RASHKO K
Year of Publication 14.03.1987

by FENERDZHIEV,LJUBOMIR S, NACHEV,KHRISTO N, POPOV,TODOR V, MITEV,STEFAN P, PAUNOV,STOJJKO P, VELICHKOV,ANTON I, KOLEV,KONSTANTIN G, MOMERIN,KHRISTO A, MANDALIEV,GEORGI M, KALCHEV, STOJAN V
Year of Publication 16.05.1983