翁秉仁2010-05-162018-06-282010-05-162018-06-281992http://ntur.lib.ntu.edu.tw//handle/246246/183271application/pdf2042677 bytesapplication/pdfen-US基本群與非正曲流形journal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/183271/1/04.pdf