Giacosa F, Gutsche Th, Lyubovitskiy V. E. Valery Efimovich, & Faessler A. (2005). Scalar nonet quarkonia and the scalar glueball: Mixing and decays in an effective chiral approach; Physical Review D; Vol. 72, iss. 9. 2005. https://doi.org/10.1103/PhysRevD.72.094006

Giacosa F, Gutsche Th, Lyubovitskiy V. E. Valery Efimovich, and Faessler A. Scalar Nonet Quarkonia and the Scalar Glueball: Mixing and Decays in an Effective Chiral Approach; Physical Review D; Vol. 72, Iss. 9. 2005, 2005. https://doi.org/10.1103/PhysRevD.72.094006.

Giacosa F, et al. Scalar Nonet Quarkonia and the Scalar Glueball: Mixing and Decays in an Effective Chiral Approach; Physical Review D; Vol. 72, Iss. 9. 2005, 2005. https://doi.org/10.1103/PhysRevD.72.094006.