Folstad, I., and A. C. Nilssen. 1990. “Abundance of Warble Fly Larvae Hypoderma Tarandi (L.) (Diptera:Oestridae) in Reindeer Rangifer Tarandus Tarandus (L.) and Its Relation to Reindeer Postcalving Migration”. Rangifer 10 (3): 239. https://doi.org/10.7557/2.10.3.862.