A formal characterization of ordinal numbers. - Nicholas J. DeLillo (Notre Dame J. Formal Log., 1973)

Erratum: "A formal characterization of ordinal numbers". - Nicholas J. DeLillo (Notre Dame J. Formal Log., 1974)

A note on Turing machine regularity and primitive recursion. - Nicholas J. DeLillo (Notre Dame J. Formal Log., 1978)

Models of an extension of the theory ORD. - Nicholas J. DeLillo (Notre Dame J. Formal Log., 1979)

A combinatorial algorithm for minimizing the number of states of a deterministic finite automation. - Nicholas J. DeLillo (ACM Conference on Computer Science, 1989)

Teaching Ada by the book: the pedagogy of Ada in CS1. - John W. McCormick; Fintan Culwin; Nicholas J. DeLillo; Michael B. Feldman; Richard E. Pattis; Walter J. Savitch (SIGCSE, 1994)