Baryshev, Yu. V. (2008). "Expanding Space: The Root of Conceptual Problems of the Cosmological Physics". Practical Cosmology. 2: 20–30. arXiv:0810.0153. Bibcode:2008pc2..conf...20B.
Kaya, Ali (1 November 2011). "Hubble's law and faster than light expansion speeds". American Journal of Physics. 79 (11): 1151–1154. arXiv:1107.5168. doi:10.1119/1.3625871.
Kaya, Ali (1 November 2011). "Hubble's law and faster than light expansion speeds". American Journal of Physics. 79 (11): 1151–1154. arXiv:1107.5168. doi:10.1119/1.3625871.
Baryshev, Yu. V. (2008). "Expanding Space: The Root of Conceptual Problems of the Cosmological Physics". Practical Cosmology. 2: 20–30. arXiv:0810.0153. Bibcode:2008pc2..conf...20B.