@ARTICLE{
author={Jelenkovic Branislav M,Newbury AS,Bollinger JJ,Itano WM,Mitchell TB},
year={2003},
title={Sympathetically cooled and compressed positron plasma},
journal={PHYSICAL REVIEW A},
volume={67},
number={6},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Jelenkovic Branislav M,Newbury AS,Bollinger JJ,Mitchell TB,Itano WM},
year={2002},
title={Sympathetically laser-cooled positrons},
journal={NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS},
volume={192},
number={1-2},
pages={117-127},
document_type={Article},
}