Review article about the light scalar mesons, experimental and theoretical advances during the previous two years. The nature of several scalar mesons is controversial and they include exotic objects like glue-balls. The note is published in the Review of Particle Properties.
Amsler, C.; Gutsche, T.; Spanier, Stefan M; and Tornqvist, N.A., "Note on Scalar Mesons" (2010). Physics and Astronomy Publications and Other Works.