Pillay,T.K.M. Natarajan,T. <br/><br/>
Text Book of Analytical Geometry 

 - Madras  S Vishwanathan  1981 
 - p.376 
<br/><br/><label>Subjects--Topical Terms: </label><br/>System of Circles <br/>Parabola<br/>Ellipse
<br/><br/><label>Dewey Class. No.: </label>516 P641