Rawlynce C. Bett, Mwai A. Okeyo, Birgitta Malmfors, Kjell Johansson, Morris Agaba, Donald R. Kugonza, A.K.F.H. Bhuiyan, Anibal E. Vercesi Filho, Arthur S. Mariante, Fidalis D. Mujibi, Jan Philipsson (2013). Cattle Breeds: Extinction or Quasi-Extant?. Resources2 (3): 335–357. doi:10.3390/resources2030335.
Breed data sheet: Svensk Fjällras/Sweden. Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations. Accessed December 2016.
Breed data sheet: Fjällnära boskap/Sweden. Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations. Accessed December 2016.
Rawlynce C. Bett, Mwai A. Okeyo, Birgitta Malmfors, Kjell Johansson, Morris Agaba, Donald R. Kugonza, A.K.F.H. Bhuiyan, Anibal E. Vercesi Filho, Arthur S. Mariante, Fidalis D. Mujibi, Jan Philipsson (2013). Cattle Breeds: Extinction or Quasi-Extant?. Resources2 (3): 335–357. doi:10.3390/resources2030335.
researchgate.net
R.C. Bett, K. Johansson, E. Zonabend, B. Malmfors, J. Ojango, M. Okeyo, J. Philipsson (2010). Trajectories of Evolution and Extinction in the Swedish Cattle Breeds. In: 9th World Congress on Genetics Applied to Livestock Production: Proceedings; Leipzig, Germany; August 1–6, 2010. Leipzig: Gesellschaft für Tierzuchtwissenschaften. ISBN9783000316081.