Communications of the ACM

King, P.J.H. and Johnson, R.G. (1974) Comments on the algorithms of Verhelst for the conversion of limited-entry decision tables to flowcharts. Communications of the ACM 17 (1), pp. 43-45. ISSN 0001-0782.

King, P.J.H. and Johnson, Roger (1973) Some comments on the use of ambiguous decision tables and their conversion to computer programs. Communications of the ACM 16 (5), pp. 287-290. ISSN 0001-0782.