Stewart, I <br/><br/>
Rep-tiling the plane.  [electronic resource] 

 -  Scientific American  May 2000 
 - 110-1 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8733 
<br/><br/><label>Standard No.: </label>10.1038/scientificamerican0500-110  doi