@article {Tamura1992,
	title = {{Estimation of the number of nucleotide substitutions when there are strong transition-transversion and G+C-content biases}},
	journal = {Mol. Biol. Evol.},
	volume = {9},
	number = {4},
	year = {1992},
	month = {jul},
	pages = {678{\textendash}687},
	url = {http://mbe.oxfordjournals.org/content/9/4/678.abstract},
	author = {Tamura, K}
}
