Published in
Oxford University Press (OUP), Monthly Notices of the Royal Astronomical Society, 1(167), p. 1P-6P, 1974
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Optical Variability of Three Seyfert Galaxies
Journal article published in 1974 by
H. Netzer 
,
B. E. J. Pagel
,
B. E. J. Pagel
This paper was not found in any repository, but could be made available legally by the author.
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