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1987A&AS...67...17X - Astron. Astrophys., Suppl. Ser., 67, 17-24 (1987)
The optical variability of seven BL Lacertae objects.
XIE G.-Z., LI K.-H., BAO M.-X., HAU P.-J., ZHOU Y., LIU X.-D. and DENG L.-W.
Journal keyword(s):
Simbad objects: 8
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