@conference {50632893,
	title = {{Optimal placement and activity scheduling to maximize coverage lifetime in wireless sensor networks}},
	booktitle = {International Symposium on Computer and Information Sciences},
	year = {2007},
	doi = {10.1109/ISCIS.2007.4456874},
	author = {Yavuz Boga{\c c} T{\"u}rkogullari and Necati Aras and I. Kuban Altinel and Cem Ersoy}
}
