1. Leçons sur les propriétés extrémales et la meilleure approximation des fonctions analytiques d'une variable réelle;Bernstein,1926
2. A note on entire functions;Kövari;Acta Math. Acad. Sc. Hung.,1957
3. On a theorem concerning the means of an entire function and its derivative;Lakshminarasimhan;J. London Math. Soc.,1965
4. Lectures on the theory of functions;Littlewood,1944
5. On means of entire functions;Rahman,1958