Svensson AC, Raudsepp T, Larsson C, Di Cristofano A, Chowdhary B, La Mantia G, Rask L, Andersson G. Chromosomal distribution, localization and expression of the human endogenous retrovirus ERV9. Cytogenet Cell Genet. 2001;92(1-2):89–96. doi: 10.1159/000056875. PMID: 11306803.