?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Deller&rft.au=Deller%2C+A&rft.aufirst=A&rft.issn=1367-2630&rft.title=New+Journal+of+Physics&rft.atitle=Positronium+emission+from+mesoporous+silica+studied+by+laser-enhanced+time-of-flight+spectroscopy&rft.volume=17&rft.date=28+April+2015&rft.genre=article