LC2: a language for conversational computing. - J. G. Mitchell; Alan J. Perlis; H. Van Zoeren (Symposium on Interactive Systems for Experimental Applied Mathematics, 1967)

WATFOR - The University of Waterloo FORTRAN IV compiler. - Peter W. Shantz; R. A. German; J. G. Mitchell; R. S. K. Shirley; C. Robert Zarnke (Commun. ACM, 1967)