Visual pigments, oil droplets and cone photoreceptor distribution in the european starling (Sturnus vulgaris)   [electronic resource] 

 -  The Journal of experimental biology  May 1998 
 - 1433-46 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1477-9145 
<br/><br/><label>Standard No.: </label>10.1242/jeb.201.9.1433  doi