Lucini, B., D'Elia, M., Pica, C., Paffuti, G., & Giacomo, A. D. (2005). Color confinement and dual superconductivity of the vacuum. IV. Physical Review D, "D71"(11), p. 114502. doi:10.1103/PhysRevD.71.114502

Lucini, Biagio, Massimo D'Elia, C. Pica, G. Paffuti, and A. Di Giacomo. "Color Confinement and Dual Superconductivity of the Vacuum. IV." Physical Review D "D71", no. 11 (2005): 114502.

Lucini, Biagio, et al. "Color Confinement and Dual Superconductivity of the Vacuum. IV." Physical Review D "D71".11 (2005): 114502.