title: Quasi-Stellar Diameters and Intensity Fluctuations It is shown that there are relativistic limits on the fluctuations in brightness which may be observed for a large spherical source, and also for more general sources, so that quasi-stellar objects are probably no more than light-days in size. There is thus a possibility that they may be close to our galaxy.
authors.forename: J
authors.initials: J
authors.lastname: Terrell