NN Cep

References

1. Gudur1983
   Gudur, N., Gulmen, O., Sezer, C. & Sengonca, H. “Photoelectric Photometry of the Eclipsing Binary NN Cephei”: 1983, Astronomy and Astrophysics Supplement Series, Volume 51, pp. 27-35
   http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1983A%26AS...51...27G&db_key=AST&high=3f2ea4260a17974