Neiman, M., Jokela, J., & Lively, C. M. (2005). Variation in asexual lineage age in Potamopyrgus antipodarum, a New Zealand snail. Evolution, International Journal of Organic Evolution, 59(9), 1945-1952. https://doi.org/10.1111/j.0014-3820.2005.tb01064.x