Widmann, E <br/><br/>
Hyperfine structure of antiprotonic helium revealed by a laser-microwave-laser resonance method.  [electronic resource] 

 -  Physical review letters  Dec 2002 
 - 243402 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0031-9007 
<br/><br/><label>Standard No.: </label>10.1103/PhysRevLett.89.243402  doi