7WELBOURNE E,BATTLE L,COLE G. Building the internet of things using RFID[J].IEEE Internet Computing,2009,(03):48-55.
8BOHLI J,SORGE C,WESTHOFF D. Initial observations on economics,pricing,and penetration of the internet of things market[J].Computer Communication Review,2009,(02):50-55.doi:10.1145/1517480.1517491.