@article{03834904,
title = {Generalized contraction principle.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {6},
year = {1983},
pages = {89-94},
doi = {10.1155/S016117128300006X},
zbl = {0526.54030},
language = {en},
url = {http://dml.mathdoc.fr/item/03834904}
}
Chatterjee, Dipak. Generalized contraction principle.. International Journal of Mathematics and Mathematical Sciences, Tome 6 (1983) pp. 89-94. doi : 10.1155/S016117128300006X. http://gdmltest.u-ga.fr/item/03834904/