Issue No.11 - November (1981 vol.14)
S.A. Sutton , Digital Technology Incorporated
An experimental design language gives evidence that software design may benefit from the same formal techniques programmers are using.
S.A. Sutton, V.R. Basili, "Special Feature: The Flex Software Design System: Designers Need Languages, too", Computer, vol.14, no. 11, pp. 95-102, November 1981, doi:10.1109/C-M.1981.220257