Portfolios of Exchange Relationships: An Empirical Investigation at an Online IT Marketplace for Small Firms. - Uladzimir Radkevitch; Eric van Heck; Otto R. Koppius (ICIS, 2006)

Portfolios of buyer-supplier exchange relationships in an online marketplace for IT services. - Uladzimir Radkevitch; Eric van Heck; Otto R. Koppius (Decis. Support Syst., 2009)