AO Cas

References

1. Abhyankar1959
   Abhyankar, K.D. “A Study of Some Early Type Close Binary Stars”: 1959, The Astrophysical Journal Supplement, Volume 4, pp. 157-198
   http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1959ApJS....4..157A&db_key=AST&high=3f2ea4260a04751

2. Koch1960
   Koch, R.H. “Three-color Photometry of AO Cassiopeiae”: 1960, The Astronomical Journal, Volume 65, pp. 127-138
   http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1960AJ.....65..127K&db_key=AST&high=3f2ea4260a04751

3. Schneider1978
   Schneider, D.P. & Leung, K.-C. “Evolved contact systems of spectral type O. II - AO Cassiopeiae”: 1978, The Astrophysical Journal, Volume 223, pp. 202-206
   http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1978ApJ...223..202S&db_key=AST&high=3f2ea4260a04541