@article {86,
	title = {On the Tendency of Species to Form Varieties; and On the Perpetuation of Varieties and Species by Natural Means of Selection},
	journal = {Journal of the Proceedings of the Linnean Society: Zoology},
	volume = {3},
	year = {1858},
	pages = {45-62},
	type = {Author{\textquoteright}s offprint of the original},
	author = {Darwin, Charles and Alfred Russel Wallace}
}
