¹ Irz, X. and Kurppa, S. (2013) Inter-household variations in environmental impact of food consumption in Finland. http://ageconsearch.umn.edu/bitstream/152215/2/DP2013_1.pdf
² Hassan, A., Rylander C., Brustad, M., Sandanger, T. (2012) Nutrients and toxic elements in semidomesticated
reindeer in Norway: Nutritional and Food Safety Aspects. https://munin.uit.no/bitstream/handle/10037/5803/article.pdf?sequence=1&isAllowed=y