Folder H.87. 11th meeting, 21-22 April 1978, at DESY outstation, Hamburg.

Folder H.88. 12th meeting, 10-11 July 1978.

Folder H.89. 13th meeting, 18-19 January 1979.

Folder H.90. 14th meeting, 23-24 November 1979, at ILL outstation, Grenoble.