Haurysh, V., and V. Andreev. “Dalitz Decays of Unflavored Mesons in the Poincaré Covariant Quark Model”. Ukrainian Journal of Physics 64, no. 6 (August 2, 2019): 451. Accessed August 23, 2019. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019392.