Improved normalization results for digit on-line arithmetic. - Richard J. Zaccone; Jesse L. Barlow (IEEE Symposium on Computer Arithmetic, 1985)

Eliminating the Normalization Problem in Digit On-Line Arithmetic. - Richard J. Zaccone; Jesse L. Barlow (IEEE Trans. Computers, 1987)

APL and mastermind. - Richard J. Zaccone (ACM SIGAPL APL Quote Quad, 1988)