Barr, F H <br/><br/>
On the elimination of the lumen from the responsivity calibration of photodetectors.  [electronic resource] 

 -  Applied optics  Sep 1967 
 - 1575-6 p.  digital 
<br/><br/> Publication Type: Letter 
<br/><br/><label>ISSN: </label>1559-128X 
<br/><br/><label>Standard No.: </label>10.1364/AO.6.001575  doi