@article {260,
	title = {Phenological changes reflect climate change in Wisconsin},
	journal = {Proceedings of the National Academy of Sciences of the United States of America},
	volume = {96},
	year = {1999},
	month = {08/1999},
	pages = {9701-9704},
	chapter = {9701},
	author = {Nina L. Bradley and A. Carl Leopold and John Ross and Wellington Huffaker}
}
@article {159,
	title = {The Internal Cuticle of Cirsium horridulum (Asteraceae) Leaves},
	journal = {American Journal of Botany},
	volume = {86},
	year = {1999},
	month = {01/1999},
	pages = {928},
	chapter = {923},
	author = {Thomas C. Pesacreta and Karl H. Hasenstein}
}
@article {654,
	title = {Consequences of achene biomass, within-achene allocation patterns, and pappus on germination in ray and disc achenes of Aster umbellatus var. umbellatus (Asteraceae).},
	journal = {Canadian Journal of Botany},
	volume = {77},
	year = {1999},
	pages = {426-433},
	author = {Chmielewski, J.G.}
}
@article {665,
	title = {Karyological studies on some taxa of the Asteraceae in Egypt},
	journal = {Compositae Newsletter},
	volume = {33},
	year = {1999},
	chapter = {1-18},
	author = {Kamel, E.A.}
}
@article {672,
	title = {A study of karyotypes of Gymnarrhena micrantha Desf. and Karelinia caspica Less. by using nucleotide-specific fluorochromes},
	journal = {Tsitologiya},
	volume = {41},
	year = {1999},
	type = {[in Russian]},
	chapter = {1073},
	author = {Nikulina, L.G. and Kotseruba, V. V.}
}
