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References
- 1 2 "A keresett weboldalt 2020. December 15-én műszaki okokból leállítottuk". Archived from the original on 2013-07-29. Retrieved 2012-01-30.
- ↑ Paál, G. (1970). "Red shifts and Quasars". Science Journal . 6 (6): 101.
- ↑ Paál, G. (1971). "The global structure of the universe and the distribution of quasi-stellar objects". Acta Physica Academiae Scientiarum Hungaricae . 30: 51–54. Bibcode:1971AcPhH..30...51P. doi:10.1007/bf03157173. S2CID 118710050.
- ↑ Luminet, Jean-Pierre; Lachièze-Rey, Marc (1995). "Cosmic Topology". Physics Reports. 254 (3): 135–214. arXiv: gr-qc/9605010 . Bibcode:1995PhR...254..135L. doi:10.1016/0370-1573(94)00085-h. S2CID 119500217.
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