Hove, K., Staaland, H., Pedersen, Ø., Ensby, T. and Sæthre, O. 1991. Equipment for placing a sustained release bolus in the rumen of reindeer. Rangifer. 11, 2 (Oct. 1991), 49–52. DOI:https://doi.org/10.7557/2.11.2.977.