@article{Liljeros2001,
author = {Liljeros, F. and Edling, C.R. and Amaral, L.A.N. and Stanley, H.E. and Aberg, Y.},
title= {The web of human sexual contacts},
year = {2001},
doi = {10.1038/35082140},
journal = {Nature},
volume = {411},
number = {6840},
pages = {907--908},
}