@article{MaNi00,
	author = {Rudolf Mathar and Thomas Niessen},
	title = "Optimum positioning of base stations for cellular radio networks",
	pages = "421-428",
	journal = "Wireless Networks",
	volume = "6",
	number = "4",
	year = 2000,
	hsb = {RWTH-CONV-223166},
	}