An Elemenatry Proof of the Prime Number Theorem with a Remainder Term. H.G. Diamond; J. Steinig — 1970 Inventiones mathematicae
An Extremal Problem Involving Functions and Their Inverses. H.G. Diamond; F. Albrecht — 1971 Mathematica Scandinavica
Sets on Which an Entire Function is Determined by Its Range. H.G. Diamond; C. Pomerance; L. Rubel — 1981 Mathematische Zeitschrift