@article {Simula.ND.23,
	title = {Adaptive Location Update Area Design for Wireless Cellular Networks Under 2D Markov Walk Model},
	journal = {Computer Communications},
	volume = {30},
	number = {9},
	year = {2007},
	pages = {2060-2069},
	author = {Zhang, Jin and Zhang, Yan and Wang, L. and Chen, J.}
}
