Aubert, B <br/><br/>
Observation of Upsilon(4S) decays to pi(+)pi(-)Upsilon(1S) and pi(+)pi(-)Upsilon(2S).  [electronic resource] 

 -  Physical review letters  Jun 2006 
 - 232001 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0031-9007 
<br/><br/><label>Standard No.: </label>10.1103/PhysRevLett.96.232001  doi