Stéen, M., Persson, S. and Hajdu, L. 1993. Protostrongylidae in Cervidae and Ovibos moscatus; a clustering based on isoelectric focusing on nematode proteins. Rangifer. 13, 4 (Dec. 1993), 221–223. DOI:https://doi.org/10.7557/2.13.4.1121.