CHAR-SHINE LIU2018-09-102018-09-101982http://www.scopus.com/inward/record.url?eid=2-s2.0-0020330350&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/297980NEGATIVE GRAVITY FIELD OVER THE 85 D. E RIDGE.journal article2-s2.0-0020330350