1. Theorie des Operations Lineaires;Banach;Monografje Mathematyczne,1932
2. Fized point theorems of mappings on probabilistic metric spaces with applications;Chang;Sci. Sinica (Ser. A),1983
3. On fixed and periodic points under contractive mapping;Edelstein;J. London Math. Soc.,1962
4. A fixed point theorem of φ-contraction mapping on probabilistic metric spaces;Fang;J. Xinjiang Univ.,1988
5. Fixed point in fuzzy metric spaces;Grabiec;Fuzzy Sets and Systems,1988