Human rights activist Andrei Sakharov and his wife, Yelena Bonner, have denounced the violent dispersal of demonstrators in Czechoslovakia and called for Soviet treatment of the issue to be raised at a forthcoming international meeting.

They issued the appeal with activists Larisa Bogoraz and Lev Timofeyev in connection with the founding conference of the anti-Stalinist Memorial group this weekend.The appeal, addressed to the 35 governments taking part in the Conference on Security and Cooperation in Europe (CSCE), said the recent action by Czechoslovak authorities violated agreements on human rights signed this month in Vienna.

Police used force to break up the rallies in Wenceslas Square in Prague, beating protesters with clubs and attacking them with water cannon and tear gas.