Price, J. M.J. M.PriceCrofton, M. W.M. W.Crofton李遠哲Lee, Yuan-TsehYuan-TsehLee2009-01-202018-07-102009-01-202018-07-101989http://ntur.lib.ntu.edu.tw//handle/246246/103179en-USObservation of Internal Rotation in the NH+4(NH3)4 Ionic Clusterjournal article