@booklet {Oksanen2013,
	title = {vegan: Community Ecology Package},
	year = {2013},
	url = {http://cran.r-project.org/package=vegan},
	author = {Oksanen, Jari and Blanchet, F. Guillaume and Kindt, Roeland and Legendre, Pierre and Minchin, Peter R. and O{\textquoteright}Hara, R. B. and Simpson, Gavin L. and Solymos, Peter and Stevens, Henry H. and Wagner, Helene}
}
