Mladjov, Roumen V.. <br/><br/>
This side up :   A theory of Rolling stones may solve the puzzle of the Great Pyramid. 

 - Oregon-XXU :   The Leach Publishing Group,   1999. 
 - p. 90-93 :   il. 
 - Bimestral 
 - Vol. I, no. 3, (May./Jun. 1999) 
 - Discovering Archaeology ;   no. 3 .
 - Estados Unidos.   The Leach Publishing Group. .
<br/><br/> Special Report : A Dark New View of the American Soithwest. 
<br/><br/><br/>Art¡culo en inglés.