Allaye-ChanA. C., WhiteR. G., HollemanD. F., & RussellD. E. (1990). Seasonal concentrations of cesium-137 in rumen content, skeletal muscles and feces of caribou from the Porcupine herd: lichen ingestion rates and implications for human consumption. Rangifer, 10(3), 17-24. https://doi.org/10.7557/2.10.3.816