Mechanisms of impact of an introduced crayfish (Orconectes rusticus) on littoral congeners, snails, and macrophytes. Canadian Journal of Fisheries and Aquatic Sciences, 48, pp.1853-61. Available at: http://www.nrcresearchpress.com/doi/abs/10.1139/f91-219#.WOua02f9lhE., 1991.
Periphytic food and predatory crayfish: relative roles in determining snail distribution. Oecologia, 82, pp.33-39. Available at: http://link.springer.com/article/10.1007%2FBF00318530?LI=true., 1990.