PAO-TI CHANG2018-09-102018-09-102016-02http://inspirehep.net/record/1424842http://scholars.lib.ntu.edu.tw/handle/123456789/396135Measurements of the t-tbar production cross section in lepton+jets final states in pp collisions at 8 TeV and ratio of 8 to 7 TeV cross sectionsworking paper