Portfolios of buyer-supplier exchange relationships in an online marketplace for IT services

@article{Radkevitch2009PortfoliosOB,
  title={Portfolios of buyer-supplier exchange relationships in an online marketplace for IT services},
  author={Uladzimir Radkevitch and Eric van Heck and Otto R. Koppius},
  journal={Decision Support Systems},
  year={2009},
  volume={47},
  pages={297-306}
}
Available online 20 May 2009