by S'BOV,ZHELJAZKO,BG, MINCHEV,KHRISTO,BG, V'LCHANOV,VESELIN,BG, ZABORONSKIJJ,ANATOLIJJ A.,SU, LOGIN,VIKTOR V.,SU
Year of Publication 15.01.1988

by MEDAROV,KHRISTO I.,BG, NAJJDOVICH,VLADIMIR E.,SU, DEMIREV,VESELIN B.,BG, MALORACKIJJ,LEV G.,SU, V'LCHANOV,VESELIN L.,BG, DEMIREV,KONSTANTIN B.,BG
Year of Publication 15.05.1989

by KOZYRENKO,MIKHAIL F.,SU, KUZMYNOV,VADIM G.,SU, MEDAROV,KHRISTO I.,BG, KOCHEVA,MARIANA T.,BG, FEDOROV,JURIJJ I.,SU, VITKEVICH,VADIM B.,SU, LEBEDEV,ANATOLIJJ T.,SU, KORCHMAR',IVAN B.,SU, KASHURKO,ALEKSANDR S.,SU, PANAJJOTOV,PANAJJOT S.,BG, V'LCHANOV,VESELIN L.,BG
Year of Publication 15.12.1988

by MEDAROV,KHRISTO I.,BG, KHORUZHIJJ,VALENTIN N.,SU, GOL'SHA,ALEKSANDR T.,SU, KINKER,MIKHAIL G.,SU, DEMIREV,VESELIN B.,BG, KASHURKO,ALEKSANDR S.,SU, V'LCHANOV,VESELIN L.,BG, F'ODOROV,JURIJJ I.,SU, DEMIREV,KONSTANTIN B.,BG
Year of Publication 15.11.1988

by MEJJKSON,TAT'JANA G.,SU, DEMIDOV,VLADISLAV G.,SU, SVETOSLAVOV,IVAN KH.,BG, PANKOVA,VESELINA G.,BG, STOJANOV,DIMCHO G.,BG, ZABORONSKIJJ,ANATOLIJJ A.,SU, ORLOV,VIKTOR I.,SU, V'LCHANOV,VESELIN L.,BG, JUNUSOV,DZHAVAD M.,SU
Year of Publication 15.09.1988

by KOCHEVA,MARIANA T.,BG, BOJJKOV,DIMIT'R T.,BG, FEDOROV,JURIJJ I.,SU, VITKEVICH,VADIM B.,SU, PEC,VASILIJJ V.,SU, PARFENOV,SERGEJJ JA.,SU, KASHURKO,ALEKSANDR S.,SU, V'LCHANOV,VESELIN L.,BG, SHEPOVALOV,VJACHESLAV D.,SU, KUCAROVA,SONJA T.,BG, GLUZBAND,GEORGIJJ N.,SU
Year of Publication 15.06.1988

by ZABORONSKIJ ANATOLIJ A,SU, VLCHANOV VESELIN,BG, VALAEV VLADIMIR S,SU, SYBOV ZHELYAZKO,BG, LOGIN VIKTOR V,SU
Year of Publication 23.11.1983

by ZABORONSKIJ ANATOLIJ A,SU, VLCHANOV VESELIN,BG, SYBOV ZHELYAZKO,BG, LOGIN VIKTOR V,SU, MINCHEV KHRISTO,BG
Year of Publication 15.09.1983

by ZABORONSKIJ ANATOLIJ A,SU, MEJKSON TATYANA G,SU, STOYANOV DIMITR KHRISTOV,BG, ORLOV VIKTOR I,SU, ZENKOVA VALENTINA V,SU, VLCHANOV VESELIN LUKOV,BG, DEMIDOV VLADISLAV G,SU, PANKOVA VESELINA GOSPODINOVA,BG, SVETOSLAVOV IVAN KHRISTOV,BG, YUNUSOV DZHAVAT M,SU
Year of Publication 07.10.1990

by KUZMINOV VADIM G,SU, SAKALO LEV G,SU, SAKALO NIKOLAJ G,SU, POKUSA ALEKSEJ A,SU, SBEV ZHELYAZKO DMITROV,BG, VLCHANOV VESELIN LUKOV,BG, NOSOV GRIGORIJ R,SU, DAMYANOV STOYAN STOYANOV,BG, DINEV RUSI IVANOV,BG
Year of Publication 15.06.1981