@article {1998,
	title = {Introduction to DAta requirements for Natural-language Descriptions and Identification},
	journal = {Internet},
	year = {1999},
	keywords = {DELTA, INCOMPLETE},
	author = {Dallwitz, M. J.}
}
@article {1999,
	title = {Interactive Keys},
	journal = {Internet},
	year = {2000},
	keywords = {INCOMPLETE, INTERACTIVE KEY, KEYS},
	author = {Dallwitz, M. J.}
}
@article {2000,
	title = {A Comparison of Interactive Identification Progams},
	journal = {Internet},
	year = {2000},
	keywords = {INCOMPLETE, INTERACTIVE KEY},
	author = {Dallwitz, M. J.}
}
