Sanchez, del A., Lees, J. ., , Prencipe, E. ., , Tico, G. ., … BABAR, C. . (2011). Search for production of invisible final states in single-photon decays of Υ(1S). Physical Review Letters, 107(2), 021804. Retrieved from http://link.aps.org/abstract/PRL/v107/p021804 (Original work published)
