Sudarshan, K.Dutta, D.Sharma, S. K.Goswami, A.Pujari, P. K.2009-12-212009-12-212007http://hdl.handle.net/123456789/14324063 bytestext/htmlenmesoporous materialsvacuumpositron porosimetryo-Ps lifetimesAir quenching of positronium in mesoporous materials: Positron porosimetryArticle