TengY.-W.TaiC.-H.YuP.S.MING-SYAN CHEN2019-04-192019-04-192018https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048339360&partnerID=40&md5=80f36f73215ae3bfcbb81cb67d6a0a1chttps://scholars.lib.ntu.edu.tw/handle/123456789/405583Revenue maximization on the multi-grade productconference paper2-s2.0-85048339360