A recent one is Electronic Trading in Copyright Objects and Its Implications for Universities . Electronic Services Delivery Electronic commerce may be conducted in relation to the delivery of goods or the performance of services. Tickets for events can be booked over the net, and so could appointments with a doctor. Other examples are a search engine interacting with someone to produce a list of relevant URLs, and the Tax office providing information to enquirers. From Brochure-Ware to Entry Points .
All commerce depends on the ability to exchange something of value for something else of value.
Barter is limiting, and in the vast majority of trades, one side offers goods or services, and the other side offers money. A few additional items are available. Reference Materials I maintain a substantial site of EC resources . What's New page . Here are some clusters of papers that may be relevant to your interests.