Lakshmish Ramaswamy Ling Liu Arun Iyengar Scalable Delivery of Dynamic Content Using a Cooperative Edge Cache Grid. 614-630 2007 19 IEEE Trans. Knowl. Data Eng. 5 http://dx.doi.org/10.1109/TKDE.2007.1031 db/journals/tkde/tkde19.html#RamaswamyLI07