1. H. L. Abbott, On a conjecture of Erdős and Straus on non-averaging sets of integers,Proceedings of the Fifth British Combinatorial Conference, Congressus Numerartium, XV (1975), 1–4.
2. H. L. Abbott, On the Erdős—Straus non-averaging set problem.Acta Math. Hung.,47 (1986), 117–119.
3. P. Erdős and E. G. Straus, Non-averaging sets II,Combinatorial Theory and its Applications, Vol. II, Colloquia Mathematica Societatis János Bolyai,4 (1970), 405–411
4. E. G. Straus, Non-averaging sets,Proceedings of Symposia in Pure Mathematics, XIX, American Mathematical Society (1971), 215–222.