BibTex format
@article{Gupta:1998,
author = {Gupta, S and Ferguson, N and Anderson, R},
journal = {Science},
pages = {912--915},
title = {Chaos, persistence, and evolution of strain structure in antigenically diverse infectious agents},
url = {http://www.ncbi.nlm.nih.gov/pubmed/9572737},
volume = {280},
year = {1998}
}