@article{Waibel2011Altruism,
    author = {Waibel, Markus AND Floreano, Dario AND Keller, Laurent},
    journal = {PLoS Biol},
    publisher = {Public Library of Science},
    title = {A Quantitative Test of Hamilton's Rule for the Evolution of Altruism},
    year = {2011},
    month = {05},
    volume = {9},
    url = {http://dx.doi.org/10.1371%2Fjournal.pbio.1000615},
    pages = {e1000615},
    abstract = {
<p>A study of experimental evolution in simulated groups of foraging robots demonstrates that their propensity to behave altruistically depends on their genetic relatedness (similarity), and the costs and benefits associated with altruistic behavior.</p>
},
    number = {5},
    doi = {10.1371/journal.pbio.1000615}
}