Halvorsen, O. and Wissler, K. 1983. Methods for estimating the density of Elaphostrongylus rangiferi Mitskevich (Nematoda, Metastrongyloidea) larvae in faeces from reindeer, Rangifer tarandus L. Rangifer. 3, 1 (May 1983), 33–39. DOI:https://doi.org/10.7557/2.3.1.465.