@article {2527,
	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},
	author = {Darwin, Charles and Wallace, Alfred Russel}
}
