DI Her

References

1. Martynov1980
   Martynov, D. Ya. & Khaliullin, KH. F. “On the Relativistic Motion of the Periastron in the Eclipsing Binary System DI Herculis”; 1980, Astrophysics and Space Science, Volume 71, pp. 147-170
   http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1980Ap%26SS..71..147M&db_key=AST&high=3f2ea4260a19020

2. Popper1982
   Popper, Daniel M. “Rediscussion of eclipsing binaries. XIII - DI Herculis, A B-type System with an Eccentric Orbit”: 1982, The Astrophysical Journal, Volume 254, pp. 203-213
   http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1982ApJ...254..203P&db_key=AST&high=3f2ea4260a19020