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บรรณานุกรม

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Krasnikov, Serguei (2003). "The quantum inequalities do not forbid spacetime shortcuts". Physical Review D. 67 (10): 104013. arXiv:gr-qc/0207057. Bibcode:2003PhRvD..67j4013K. doi:10.1103/PhysRevD.67.104013.
Li, Li-Xin (2001). "Two Open Universes Connected by a Wormhole: Exact Solutions". Journal of Geometrical Physics. 40 (2): 154–160. arXiv:hep-th/0102143. Bibcode:2001JGP....40..154L. doi:10.1016/S0393-0440(01)00028-6.
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Nandi, Kamal K.; Zhang, Yuan-Zhong (2006). "A Quantum Constraint for the Physical Viability of Classical Traversable Lorentzian Wormholes". Journal of Nonlinear Phenomena in Complex Systems. 9: 61–67. arXiv:gr-qc/0409053. Bibcode:2004gr.qc.....9053N.
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Visser, Matt (2002). "The quantum physics of chronology protection by Matt Visser". arXiv:gr-qc/0204022. An excellent and more concise review.
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