Rathje, W.L.. <br/><br/>
Closing "The Gap"  An Astronomer's insight Solves an Archaeological Mystery. 

 - Oregon-XXU :   The Leach Publishing Group,   2000. 
 - p. 10 
 - Bimestral 
 - Vol. 2, no. 2, (Mar./Apr. 2000) 
 - Discovering Archaeology ;   no. 2 .
 - Estados Unidos.   The Leach Publishing Group. .
<br/><br/> Exploits. 
<br/><br/><br/>Art¡culo en inglés.