BibTex format
@article{NOWAK:1991:10.1126/science.1683006,
author = {NOWAK, MA and ANDERSON, RM and MCLEAN, AR and WOLFS, TFW and GOUDSMIT, J and MAY, RM},
doi = {10.1126/science.1683006},
journal = {SCIENCE},
pages = {963--969},
title = {ANTIGENIC DIVERSITY THRESHOLDS AND THE DEVELOPMENT OF AIDS},
url = {http://dx.doi.org/10.1126/science.1683006},
volume = {254},
year = {1991}
}