by PAPUCHAROV, PETAR G, IVANOV, GEORGI A, VALCHEV, JORDAN B, KAROV, KALIN V, CHERNAS, JURI JA, PETROV, LJUDMIL A
Year of Publication 15.04.1991

by PAPUCHAROV, PETAR G, MINCHEV, KHRISTO I, VALCHEV, JORDAN B, KAROV, KALIN V, CHERNAS, JURI JA, PELOV, VIKTOR E, GENOVA, NINA T
Year of Publication 14.02.1992

by PAPUCHAROV, PETAR G, MINCHEV, KHRISTO I, VALCHEV, JORDAN B, KAROV, KALIN V, CHERNAS, JURI JA, PELOV, VIKTOR E, GENOVA, NINA T
Year of Publication 16.07.1990

by BORISENKO, ALEKSANDR M, VITKEVICH, VADIM B, PAPUCHAROV, PETAR G, KRAEV, STOJCHO D, BAKALOVA, BOJANKA I, TIBABSHEV, OLEG G, KAROV, KALIN V, VALCHEV, JORDAN B, CHERNAS, JURI JA, KOCHEVA, MARIANA T, PELOV, VIKTOR E, GENOVA, NINA T
Year of Publication 15.05.1991

by PAPUCHAROV, PETAR G, TIBABSHEV, OLEG G, KASHURKO, ALEKSANDR S, ROSENOV, LACHEZAR G, VALCHEV, JORDAN B, OREKHOV, ARSEN P, PELOV, VIKTOR E, FEDOROV, JURIJ B, BORISENKO, ALEKSANDR M, KOMITOVSKI, MIKHAIL D, KAROV, KALIN V, CHERNAS, JURI JA, GENOVA, NINA T, PETROV, LJUDMIL A, BOSHNAKOV, STEFAN T
Year of Publication 15.03.1991

by STOEVA, VASKA V, PAPUCHAROV, PETAR G, IVANOV, GEORGI A, KASHURKO, ALEKSANDR S, VALCHEV, JORDAN B, KHRUSHCHOV, NIKOLAJ A, SMAKOUZ, GEORGIJ N, BOJKOV, DIMITAR T, SKOROPAD, VLADIMIR M, KAROV, KALIN V, CHERNAS, JURI JA, KLEPIKOV, JURIJ B, GROZDANOV, VELCHO D, PETROV, LJUDMIL A
Year of Publication 15.08.1990