Doria, Renato, and M. J. Neves. “A Non-Abelian Model SU(N) X SU(N)”.
JOURNAL OF ADVANCES IN PHYSICS
8, no. 1 (February 27, 2015): 1988–2004. Accessed April 9, 2025. https://rajpub.com/index.php/jap/article/view/1528.