The bibliography cites 7 sources. This 12 page paper focuses on various types of DSL technology. The concept is defined and explored in depth. The paper focuses on technical processes. Both positive and negative aspects of DSL are noted.
Cable is discussed as well.
Bibliography lists 20 sources. This 5 page paper considers the uses of dynamic programming and some of the advantages and disadvantages that this might entail. Practical examples are given to illustrate the points raised. The bibliography cites 3 sources. E-commerce has not yet become at all common in Europe, but it appears that the reason has more to do with merchants than it does with potential customers.