1. On a Tauberian theorem connected with the new proof of the prime number theorem and Supplementary Note;Erdös;J. Indian Math. Soc. (N.S.),1949
2. On a problem of additive number theory;Erdös;J. London Math. Soc.,1956
3. Restglied eines Tauberschen Satzes;Freud;I. Acta Math. Acad. Sci. Hungar.,1951
4. Divergent Series;Hardy,1949