题目:A quick-and-easy method for estimating switching costs
Authors: Oz Shy
Source: International Journal of Industrial Organization Volume 20, Issue 1, January 2002, Pages 71-87
http://www.sciencedirect.com/science/article/B6V8P-44CVVJ8-4/2/d684fb85fc0a371d7aaa33c7f0e16a1e


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