@article {Steel2000,
	title = {Simple but fundamental limitations on supertree and consensus tree methods},
	journal = {Systematic Biology},
	volume = {49},
	number = {2},
	year = {2000},
	pages = {363{\textendash}368},
	author = {Steel, M. and Dress, A. W. M. and B{\"o}cker, S.}
}
