1. Integral equations, implicit functions, and fixed points;Burton, T. A.;Proc. Amer. Math. Soc.,1996
2. The use of the 𝐸-metric spaces in the search for fixed points;De Pascale, E.;Matematiche (Catania),1993
3. Les Grands Classiques Gauthier-Villars. [Gauthier-Villars Great Classics];Fréchet, Maurice,1989
4. Generalized contraction mapping principles in probabilistic metric spaces;Hadžić, O.;Acta Math. Hungar.,2003
5. Mathematics and its Applications;Hadžić, Olga,2001