Liberal, I <br/><br/>
Geometry-invariant resonant cavities.  [electronic resource] 

 -  Nature communications  Mar 2016 
 - 10989 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. 
<br/><br/><label>ISSN: </label>2041-1723 
<br/><br/><label>Standard No.: </label>10.1038/ncomms10989  doi