The periodic points and the invariant set of an small epsilon, Greek-contractive map.

Changming Ding Sam B. Nadler Jr. The periodic points and the invariant set of an small epsilon, Greek-contractive map. 793-801 2002 15 Appl. Math. Lett. 7 http://dx.doi.org/10.1016/S0893-9659(02)00044-7 db/journals/appml/appml15.html#DingN02