SIMBAD references

1983ATsir1270....4A - Astron. Tsirk., 1270, 4-5 (1983)

The monotonous decrease of the UBV-brightness of the IC 4997 planetary nebula during 1968-1982.

ARHIPOVA V.P. and KOSTYAKOVA E.B.

Journal keyword(s):

Simbad objects: 1

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