Arnold, Philip J.,  <br/><br/>
Early formative pottery from the tuxtla mountains and implications for gulf olmec origins. 

 - Washington, DC-US :   Society for American Archaeology,   2003. 
 - p.29-46 :   il 
 - trimestral 
 - Vol.14, no.1(Mar.2003) 
 - Latin American Antiquity ;   vol.14, no.1 .
 - Estados Unidos.   Society for American Archaeology. .