Անահիտ Չուբարյան

 All-Union Conference on the Mathematical Logic (III, Novosibirsk, Russia, 1974; IX, St.-Petersburg, Russia, 1988; X, Alma -Ata, Kazakhstan, 1990). 

All-Union symposium on the theory of the logic proof (Moscow, Russia, 1974).  

CSIT (Yerevan, Armenia, 1997, 1999, 2001).

 
 Logic-Colloquiums (Vienna, Austria, 2001, Muenster, Germany, 2002).

 II Chekhoslovatsko- Soviet seminar of the young scientists ? (Bratislava, Czechoslovakia, 1982).