1. Athena Series: Selected Topics in Mathematics;Artin, Emil,1964
2. On the inequality of Kantorovich;Beckenbach, E. F.;Amer. Math. Monthly,1964
3. Ergebnisse der Mathematik und ihrer Grenzgebiete, (N.F.), Band 30;Beckenbach, Edwin F.,1961
4. A hypergeometric mean value;Carlson, B. C.;Proc. Amer. Math. Soc.,1965
5. G. H. Hardy, J. E. Littlewood and G. Pólya, Inequalities, 2nd ed., Cambridge Univ. Press, Cambridge, 1959.