Chatrchyan, S Indications of suppression of excited Υ states in Pb-Pb collisions at √(s(NN))=2.76 TeV. [electronic resource] - Physical review letters Jul 2011 - 052302 p. digital Publication Type: Journal Article ISSN: 1079-7114 Standard No.: 10.1103/PhysRevLett.107.052302 doi