VEGT, Wim. The 4-Dimensional Dirac Equation in Relativistic Field Theory. European Journal of Applied Sciences, [S. l.], v. 9, n. 1, p. 35–93, 2021. DOI: 10.14738/aivp.91.9403. Disponível em: https://scholarpublishing.org/journals/index.php/EJAS/article/view/7903. Acesso em: 30 may. 2026.