YY Sgr
References
Lacy1993
Lacy, C. H. S. “The Photometric Orbit and Apsidal Motion of YY Sagittarii”: 1993, The Astronomical Journal, Volume 105, pp. 637-645
http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1993AJ....105..637S&db_key=AST&high=3f567b0b2c24877Lacy1997
Lacy, C. H. S. “Absolute Dimensions and Masses of YY Sagittarii and V526 Sagittarii”: 1997, The Astronomical Journal, Volume 113, pp. 1091-1094
http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1997AJ....113.1091L&db_key=AST&high=3f567b0b2c24877