@article {66975,
	title = {New virtual coordinate system for improved routing efficiency in sensor network},
	journal = {International Journal of Computer Science Issues (IJCSI)International Journal of Computer Science Issues (IJCSI)},
	volume = {9},
	year = {2012},
	month = {2012},
	pages = {59},
	isbn = {1694-0814},
	author = {Karima, Aksa and Mohammed, Benmohammed and BILAMI azeddine}
}
