Welford, W. T. <br/><br/>
The optics of nonimaging concentrators:   light and solar energy / 
by W. T. Welford and R. Winston. 
 - New York:  Academic Press,  1978. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p.193-194. 
<br/><br/><label>ISBN: </label>0127453504 
<br/><br/><label>LCCN: </label>77-25634 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Solar collectors.