Part I: [epsilon]-calculus; Part II: Iterated integrals. - Paul L. Richman (1968)

The choice of base. - W. S. Brown; Paul L. Richman (Commun. ACM, 1969)

Automatic Error Analysis for Determining Precision. - Paul L. Richman (Commun. ACM, 1972)

Variable-Precision Exponentiation. - Paul L. Richman (Commun. ACM, 1973)

A Midpoint Phenomenon. - A. J. Goldstein; Paul L. Richman (J. ACM, 1973)

Computing a Subinterval of the Image. - Paul L. Richman (J. ACM, 1974)