Anna M. Delprato, Anna M.Kudrolli, A.Samadani, AzadehTsimring, L. S.2004-12-032004-12-0320012001http://hdl.handle.net/2003/128910.17877/DE290R-11090enThe American Physical SocietyPhysical Review Letters530Swarming Ring Patterns in Bacterial Colonies Exposed to Ultraviolet Radiation10.1103/PhysRevLett.87.158102article (journal)