@article{05574406,
title = {A new 4-point },
journal = {Abstract and Applied Analysis},
volume = {2009},
year = {2009},
doi = {10.1155/2009/301967},
zbl = {1167.65342},
language = {en},
url = {http://dml.mathdoc.fr/item/05574406}
}
Mustafa, Ghulam; Khan, Faheem. A new 4-point . Abstract and Applied Analysis, Tome 2009 (2009) . doi : 10.1155/2009/301967. http://gdmltest.u-ga.fr/item/05574406/