@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}
}
@article {1754,
	title = {On the phenomena of variation and geographical distribution as illustrated by the Papilionidae of the Malayan region.},
	journal = {Transactions of the Linnean Society of London},
	volume = {25},
	year = {1865},
	pages = {1{\textendash}71},
	author = {Wallace, Alfred Russel}
}
