Shermer, Michael <br/><br/>
UFOs, UAPs and CRAPs.  [electronic resource] 

 -  Scientific American  Apr 2011 
 - 90 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8733 
<br/><br/><label>Standard No.: </label>10.1038/scientificamerican0411-90  doi