He, Q <br/><br/>
Observation of Upsilon(2S)-->etaUpsilon(1S) and search for related transitions.  [electronic resource] 

 -  Physical review letters  Nov 2008 
 - 192001 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0031-9007 
<br/><br/><label>Standard No.: </label>10.1103/PhysRevLett.101.192001  doi