Abstract
Photometric observations of thirty quasi-stellar objects have been made and seven new variables have been discovered. No correlation was found, however, between variability and any other observed property.
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PEACH, J. Optical Variations in Quasi-stellar Objects. Nature 222, 439–442 (1969). https://doi.org/10.1038/222439a0
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DOI: https://doi.org/10.1038/222439a0
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