Chu, H.H.ChuKang, M.CM.CKangTan, E.T.E.T.Tan2010-05-092018-06-282010-05-092018-06-281989http://ntur.lib.ntu.edu.tw//handle/246246/181504application/pdf310900 bytesapplication/pdfen-USThe invariants of projective linear group actionsjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/181504/1/17.pdf