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Technical re- port, Oslo 3, Norway, Norwegian Computing Center, Forskningveien 1B, September 1967.  DAHCHOUR, M.; PIROTTE, A. ; ZIMÁNYI, E.. A Generic Role Model for Dynamic Objects. ... SIGPLAN Notices, 23(5), May 1988.  LOPES, C. V.; LIEBERHERR, K.. ...fatcat:v2tpxuy5fzhufhqn232nmvfzxq