Paper  doi  bibtex   

@phdthesis{wang_determining_2010,
	title = {Determining ecological regions in {Michigan} based on native tree distribution using {Geographic} {Information} {Systems} and {Principal} {Component} {Analysis}},
	url = {https://d.lib.msu.edu/etd/12461},
	urldate = {2023-06-29},
	school = {Michigan State University},
	author = {Wang, Sihui},
	year = {2010},
	doi = {10.25335/M52Z12Q8T},
	keywords = {Terrestrial Ecoregions (CEC 1997)},
}