Acoustic anomaly and the Landau free energy of incommensurate K2SeO4.  [electronic resource] 

 -  Physical review. B, Condensed matter  Sep 1990 
 - 4406-4425 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0163-1829 
<br/><br/><label>Standard No.: </label>10.1103/physrevb.42.4406  doi