1. Functional equations in several variables. With applications to mathematics, information theory and to the natural and social sciences;Aczél,1989
2. Vollkommene Funktionalmittel und gewisse Kegelschnitteigenschaften;Aumann;J. Reine Angew. Math.,1937
3. Introduction to Real Analysis;Bartle,2011
4. Commuting finite Blaschke products with no fixed points in the unit disk;Basallote;J. Math. Anal. Appl.,2009
5. Measure Theory - Volume I;Bogachev,2007