Shih, D. C.-F.D. C.-F.ShihGWO-FONG LIN2008-10-232018-07-092008-10-232018-07-092002http://ntur.lib.ntu.edu.tw//handle/246246/85071application/pdf1134036 bytesapplication/pdfen-USSpectral Analysis of Water Level Fluctuations in Aquifersjournal article10.1007/s00477-002-0106-42-s2.0-23044533885http://ntur.lib.ntu.edu.tw/bitstream/246246/85071/1/10.pdf