MIKULÁŠEK, Zdeněk, Luboš KOHOUTEK,
Miloslav ZEJDA a Ondřej PEJCHA. Preliminary analysis of photometric variations of central star of planetary nebula Sh 2-71.
Astrophysics and Space Science. Heidelberg: Springer Science+Business Media B.V., 2005, roč. 296, č. 1, s. 465-468. ISSN 0004-640X.