Penrose diagram (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Penrose diagram" in English language version.

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doi.org

  • Penrose, Roger (15 January 1963). "Asymptotic proprierties of fields and space-times". Physical Review Letters. 10 (2): 66–68. Bibcode:1963PhRvL..10...66P. doi:10.1103/PhysRevLett.10.66.

harvard.edu

ui.adsabs.harvard.edu

  • Penrose, Roger (15 January 1963). "Asymptotic proprierties of fields and space-times". Physical Review Letters. 10 (2): 66–68. Bibcode:1963PhRvL..10...66P. doi:10.1103/PhysRevLett.10.66.