@article {hamprecht_02_chemical,
	title = {Chemical library subset selection algorithms: a unified derivation using spatial statistics},
	journal = {Journal of Chemical Information and Computer Sciences},
	volume = {42},
	year = {2002},
	pages = {414-428},
	author = {Fred A. Hamprecht and Thiel, W. and van Gunsteren, W. F.}
}
