Holmøy, Ingrid H., Øystein Holand, Stein I. Thoresen, Ellen Dahl, and Erik Ropstad. 2009. “Associations between annual and seasonal variations in body mass and reproductive success and blood biochemical parameters in semi-domesticated reindeer”. Rangifer 29 (1):51-61. https://doi.org/10.7557/2.29.1.210.