Intensity-dependent photon-echo relaxation in rare-earth-doped crystals.  [electronic resource] 

 -  Physical review. B, Condensed matter  Jun 1990 
 - 11568-11571 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0163-1829 
<br/><br/><label>Standard No.: </label>10.1103/physrevb.41.11568  doi