@book {1750,
	title = {Viagens pelo Amazonas e Rio Negro},
	year = {2004},
	note = {Portuguese electronic edition of the 1889 English edition of Wallace{\textquoteright}s book A Narative of Travels on the Amazon and Rio Negro.},
	author = {Wallace, A. R.}
}
@article {1471,
	title = {The modern theory of biological evolution: an expanded synthesis.},
	journal = {Naturwissenschaften},
	volume = {91},
	year = {2004},
	pages = {255-276},
	author = {Kutschera, U. and Niklas, K. J.}
}
