AMG Bulletin No. 68A Feb. 1968
AMG Bulletin No. 68B Apr. 1968
Physique Pictorial Vol. 17 No. 1 Jul. 1968 pg. 23
Physique Pictorial Vol. 17 No. 2-4 Jan. 1969 pg. 37
AMG Bulletin No. 69E Jul. 1969 pg. 2
AMG Bulletin No. 70A 1970
Physique Pictorial Vol. 20 Dec. 1971 pg. 7