@inproceedings{yang2003noncooperation,
 author = {Beverly Yang and Sepandar D. Kamvar and Hector Garcia-Molina},
 booktitle = {First Workshop on Economics of P2P Systems},
 title = {Addressing the Non-Cooperation Problem in Competitive P2P Networks},
 url = {https://nlp.stanford.edu/pubs/yang2003noncooperation.pdf},
 year = {2003}
}