1. Existence and convergence of best proximity points;Eldred;J. Math. Anal. Appl.,2006
2. Contraction mappings and extensions;Kirk,2001
3. Fixed points for mappings satisfying cyclical contractive conditions;Kirk;Fixed Point Theory,2003
4. Cyclic representations and periodic points;Petrusel;Studia Univ. Babes–Bolyai, Math.,2005
5. Fixed point theorems for set-valued Y-contractions;Rus;Banach Center Publ.,2007