BibTex format
@article{Gifford:2003:10.1023/a:1024455415443,
author = {Gifford, R and Tristem, M},
doi = {10.1023/a:1024455415443},
journal = {Virus Genes},
pages = {291--315},
title = {The evolution, distribution and diversity of endogenous retroviruses.},
url = {http://dx.doi.org/10.1023/a:1024455415443},
volume = {26},
year = {2003}
}