@article{02221320, title = {Extended contraction principle.}, journal = {APPS. Applied Sciences}, volume = {7}, year = {2005}, pages = {147-152}, zbl = {1081.54511}, language = {en}, url = {http://dml.mathdoc.fr/item/02221320} }
Razani, Abdolrahman; Aghajani, Asadolah. Extended contraction principle.. APPS. Applied Sciences, Tome 7 (2005) pp. 147-152. http://gdmltest.u-ga.fr/item/02221320/