An approach to operating system testing. - Robert N. Sum Jr.; Roy H. Campbell; William J. Kubitz (J. Syst. Softw., 1986)

Automating the software development process. - Roy H. Campbell; Hal S. Render; Robert N. Sum Jr.; Robert B. Terwilliger (ACM Conference on Computer Science, 1988)

An object-oriented project management framework for software engineering environments - Robert N. Sum Jr. (1991)

Implementing Shared Manufacturing Services on the World-Wide Web. - Joseph W. Erkes; Kevin B. Kenny; John W. Lewis; Brion D. Sarachan; Michael W. Sobolewski; Robert N. Sum Jr. (Commun. ACM, 1996)