Chu, H.H.Chu2010-05-092018-06-282010-05-092018-06-281988http://ntur.lib.ntu.edu.tw//handle/246246/181494application/pdf297263 bytesapplication/pdfen-USOrthogonal group actions on rational function fieldsjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/181494/1/11.pdf