1. Population structure of the otter, Lutra lutra. Parameters and model for a Central European region;Ansorge;Z. Säugetierkd.,1997
2. Genetic marker investigation of the source and impact of predation on a highly endangered species;Banks;Mol. Ecol.,2003
3. Fischotterbestandserfassung im Nationalpark Müritz;Behl;Natschutzarb. MV,1999
4. Mitochondrial DNA variation in the European otter (Lutra lutra) and the use of spatial autocorrelation analysis in conservation;Cassens;J. Hered.,2000
5. Coxon, K.; Chanin, P.; Dallas, J.; Sykes, T. (1999): The Use of DNA Fingerprinting to Study the Population Dynamics of Otters (Lutra lutra) in Southern Britain: A Feasibility Study. Research and Development Technical Report W202.