HARUTYUNYAN, T.; AZIZYAN, H. Pauly Matrix and Transformation Operators for Dirac System. Mathematical Problems of Computer Science, [S. l.], v. 38, p. 59–60, 2021. Disponível em: http://www.mpcs.sci.am/index.php/mpcs/article/view/540. Acesso em: 29 may. 2025.