Everett, Allen (2004). "Time travel paradoxes, path integrals, and the many worlds interpretation of quantum mechanics". Physical Review D. 69 (124023): 124023. arXiv:gr-qc/0410035. Bibcode:2004PhRvD..69l4023E. doi:10.1103/PhysRevD.69.124023.
Noted in the Introduction to an English translation of the book, The Time Ship: A Chrononautical Journey, translated by Yolanda Molina-Gavilán and Andrea L. Bell.
Everett, Allen (2004). "Time travel paradoxes, path integrals, and the many worlds interpretation of quantum mechanics". Physical Review D. 69 (124023): 124023. arXiv:gr-qc/0410035. Bibcode:2004PhRvD..69l4023E. doi:10.1103/PhysRevD.69.124023.
Savitt, Steven F. (September 2000), "There's No Time Like the Present (in Minkowski Spacetime)", Philosophy of Science, 67 (S1): S563–S574, CiteSeerX10.1.1.14.6140, doi:10.1086/392846
Everett, Allen (2004). "Time travel paradoxes, path integrals, and the many worlds interpretation of quantum mechanics". Physical Review D. 69 (124023): 124023. arXiv:gr-qc/0410035. Bibcode:2004PhRvD..69l4023E. doi:10.1103/PhysRevD.69.124023.
Savitt, Steven F. (September 2000), "There's No Time Like the Present (in Minkowski Spacetime)", Philosophy of Science, 67 (S1): S563–S574, CiteSeerX10.1.1.14.6140, doi:10.1086/392846
Savitt, Steven F. (September 2000), "There's No Time Like the Present (in Minkowski Spacetime)", Philosophy of Science, 67 (S1): S563–S574, CiteSeerX10.1.1.14.6140, doi:10.1086/392846