The interpreter: a microprogrammable building block system. - Earl W. Reigel; U. Faber; D. A. Fisher (AFIPS Spring Joint Computing Conference, 1972)

At the Programming Language - Microprogramming interface. - Earl W. Reigel; Harold W. Lawson (SIGPLAN/SIGMICRO Interface, 1973)

Teaching microprogramming(Panel Discussion). - Larry L. Wear; Louise H. Jones; Earl W. Reigel; W. Gary Sitton; Masahiro Tsuchiya (MICRO, 1974)