FREDERIC HENRY-COUANNIER, Dr.. Negative Energies and Time Reversal in Quantum Field Theory. Global Journal of Science Frontier Research, [S.l.], v. 12, n. 13-F, nov. 2012. ISSN 2249-4626. Available at: <https://journalofscience.org/index.php/GJSFR/article/view/682>. Date accessed: 25 may 2022.