Simulik, V. M., and I. Yu. Krivsky. “Quantum-Mechanical Description of the Fermionic Doublet and Its Link With the Dirac Equation”. Ukrainian Journal of Physics 58, no. 12 (October 11, 2018): 1192. Accessed April 27, 2024. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018403.