Hutchinson, John M. Christopher Center for Adaptive Behavior and Cognition, Max Planck Institute for Human Development, Max Planck Society;
Reise, H., & Hutchinson, J. M. C. (2001). Morphological variation in terrestrial slug Deroceras turcicum (Simroth, 1894) and a northern extension of its range in Central Europe. Folia Malacologica, 9(2), 63-71.