黃胤年Cheng, K.K.ChengHuang, Yinn-NienYinn-NienHuang2009-02-042018-07-062009-02-042018-07-061993http://ntur.lib.ntu.edu.tw//handle/246246/120697en-USIonospheric Disturbances Around East Asian Region During the 20 October 1989 Magnetic Stormjournal article