Mathiesen, Svein D., et al. “Salivary Glands in Svalbard Reindeer (Rangifer Tarandus Platyrhynchus) and in Norwegian Reindeer (Rangifer Tarandus Tarandus)”. Rangifer, vol. 19, no. 1, Apr. 1999, pp. 25-32, https://doi.org/10.7557/2.19.1.289.