Barton NH. Multilocus clines. Evolution; International Journal of Organic Evolution. 1983;37(3):454-471. doi:10.2307/2408260

Barton NH. The structure of the hybrid zone in Uroderma bilobatum (Chiroptera: Phyllostomatidae). Evolution. 1982;36(4):863-866. doi:10.1111/j.1558-5646.1982.tb05452.x

Barton NH, Hewitt G. A chromosomal cline in the grasshopper Podisma pedestris. Evolution; International Journal of Organic Evolution. 1981;35(5):1008-1018. doi: 10.1111/j.1558-5646.1981.tb04966.x