YANG-FANG CHEN2018-09-102018-09-101996http://www.scopus.com/inward/record.url?eid=2-s2.0-0030283521&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/321170Observation of positron trapping and air condensation in porous silicon by angular correlation annihilation radiationjournal article10.1016/S0921-4526(96)00498-X2-s2.0-0030283521