Gaposchkin, Sergei <br/><br/>
The eclipsing variables / 
by Sergei Gaposchkin. 
 - Cambridge :  The Observatory,  1953. 
 - 69-145 pp.  23 cm. 
 - Annals of the Astronomical Observatory of Harvard College  Vol. 113, no. 2 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Variable stars.