Bunge, M. A., & Kálnay, A. J. (1966). A covariant position operator for the relativistic electron. s.n.].
Chicago Style (17th ed.) CitationBunge, Mario Augusto, and Andrés José Kálnay. A Covariant Position Operator for the Relativistic Electron. [S.l.: s.n.], 1966.
MLA (9th ed.) CitationBunge, Mario Augusto, and Andrés José Kálnay. A Covariant Position Operator for the Relativistic Electron. s.n.], 1966.