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Pedersen, Iben Lindegaard; Jensen, Jan Kjærgaard; Toft, Søren (1 April 2009). "A method of obtaining dietary data for slow worms (Anguis fragilis) by means of non-harmful cooling and results from a Danish population". Journal of Natural History. 43 (15–16): 1011–1025. Bibcode:2009JNatH..43.1011P. doi:10.1080/00222930802702464. ISSN0022-2933. S2CID84703263.
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