Simulik, V. M. “Derivation Of The Dirac and Dirac-Like Equations of Arbitrary Spin from the Corresponding Relativistic Canonical Quantum Mechanics”. Ukrainian Journal of Physics 60, no. 10 (January 10, 2019): 985. Accessed December 9, 2021. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019156.