SIMONS, H A <br/><br/>
The calculation of gamma ray penetration of the walls of cylindrical and conical collimating holes.  [electronic resource] 

 -  Physics in medicine and biology  Apr 1962 
 - 561-76 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0031-9155 
<br/><br/><label>Standard No.: </label>10.1088/0031-9155/6/4/305  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gamma Rays<br/>Humans<br/>Radiation