@article{NiKi00,
	author = {Thomas Niessen and Jaakob Kind},
	title = "The round-up property of the fractional chromatic number for proper circular arc graphs",
	pages = "256-267",
	journal = "Journal of Graph Theory",
	volume = "33",
	year = 2000,
	hsb = {RWTH-CONV-223164},
	}