French, B M <br/><br/>
Cretaceous-tertiary extinctions: alternative models.  [electronic resource] 

 -  Science (New York, N.Y.)  Dec 1985 
 - 1293-4 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.230.4731.1293  doi