CHONG-DER HU2018-09-102018-09-101991http://www.scopus.com/inward/record.url?eid=2-s2.0-0026394309&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/293305The indirect attraction between holes in the extended hubbard modeljournal article10.1007/BF006358682-s2.0-0026394309