@article {Hillis1991b,
	title = {Evidence for biased gene conversion in concerted evolution of ribosomal DNA},
	journal = {Science},
	volume = {251},
	year = {1991},
	pages = {308{\textendash}310},
	author = {Hillis, D. M. and Moritz, C. and Porter, C.A. and Baker, R.J.}
}
