Jaseja, T. S.; Javan, A.; Murray, J.; Townes, C. H. (1964). „Test of Special Relativity or of the Isotropy of Space by Use of Infrared Masers”. Phys. Rev. 133 (5a): 1221—1225. Bibcode:1964PhRv..133.1221J. doi:10.1103/PhysRev.133.A1221.
Jaseja, T. S.; Javan, A.; Murray, J.; Townes, C. H. (1964). „Test of Special Relativity or of the Isotropy of Space by Use of Infrared Masers”. Phys. Rev. 133 (5a): 1221—1225. Bibcode:1964PhRv..133.1221J. doi:10.1103/PhysRev.133.A1221.