Haberland, H.H.HaberlandChen, C. H.C. H.Chen李遠哲Lee, Yuan-TsehYuan-TsehLee2009-01-202018-07-102009-01-202018-07-101972http://ntur.lib.ntu.edu.tw//handle/246246/102553en-USDifferential Cross Sections for Metastable He and Arjournal article