bottomonium
1993 / Upsilon Spectroscopy: Transitions in the Bottomonium System / D. Besson ; T. Skwarnicki / Annual Review of Nuclear and Particle Science 43 (1993) p. 333 [doi]
1994 / Strings of Experiments in High-Energy Physics: The Upsilon Experiments / Frederik Nebeker / Historical Studies in the Physical and Biological Sciences 25 (1994) p. 137 [doi]
2008 / [Search and Discovery] The ground state of bottomonium has finally been found / Bertram Schwarzschild / Physics Today 61 (2008) p. 14 [doi]
2013 / Recent Results in Bottomonium / C. Patrignani ; T.K. Pedlar ; J.L. Rosner / Annual Review of Nuclear and Particle Science 63 (2013) p. 21 [doi]