Identification of exotic North American crayfish in Europe by DNA barcoding L. Filipová, F. Grandjean, C. Chucholl, D. M. Soes and A. Petrusek Knowl. Managt. Aquatic Ecosyst., 401 (2011) 11 Published online: 18 May 2011 DOI: 10.1051/kmae/2011025