@article{Kokko2006,
author = {Kokko, H. and Rankin, D.J.},
title= {Lonely hearts or sex in the city? Density-dependent effects in mating systems},
year = {2006},
doi = {10.1098/rstb.2005.1784},
journal = {Philosophical Transactions of the Royal Society B},
volume = {361},
number = {1466},
pages = {319--334},
}