IFIP/TC 2/WG 2.1
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Rome; 14-18.03.1988. Ershov did not attend.
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Montreal; 18-22.05.1987.
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Malvern, Great Britain; 22-26.09.1986.
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Utrecht; April 1985. Ershov did not attend.
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Pont-a-Mousson; September 1984. Ershov did not attend.
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Catalina, CA; January 1984. Ershov did not attend.
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Munich; May 1983. Ershov did not attend.
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New York; 1982.
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Newbury, UK; 1982.
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Nijmegen, Netherlands; 1981.
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Wheeling, USA; 1980.
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Brussels; December 1979.
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Summit, NJ; April 1979.
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Jablonna, Poland; 1978.
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Oxford; December 1977.
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St. Pierre de Chartreuse, France; August-September 1976.
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Munich; August 1975
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Breukelen, Netherlands; August 1974.
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Los Angeles; September 1973.
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Dresden; April 1973.
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Vienna; November 1972.
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Fontainebleau; April 1972.
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Brussel.
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Malvern.
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Novosibirsk; August 1971.
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Manchester; March 1971.
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Habay-la-Neuve; July 1968
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Banff; September 1969.
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Munich; December 1968.
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North Berwick, Scotland; July 1968.
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Tirrenia (near Pisa); June 1968.
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Zandvoort, Netherlands; May 1967.
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Warsaw; October 1966.
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St Pierre de Chartreuse; October 1965.
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Princeton; May 1965.
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Baden; September 1964.
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Tutzing, FRG; March 1964
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Delft, Netherlands; September 1963.
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Munich; August 1962.
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