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SAC
2004
ACM
13 years 10 months ago
2004
ACM
Electronic marketplaces are virtual communities where buyers may meet proposals of several suppliers and make the best choice. The exponential increment of the e-commerce amplifie...
DS
2001
13 years 6 months ago
2001
The rapid development of the Internet and of distributed computing has led to a proliferation of online service providers such as digital libraries, web information sources, electr...