Throckmorton, Peter. <br/><br/>
Underwater suroeys in Greece:1962. 

 - Pennsilvania-US :   Univesity of Pennsylvania,   1963.. 
 - páginas 17-24 :   ilustraciones blanco y negro 
 - Trimenstral 
 - Vol.5, no 2 (1962)  
 - Expedition. the bulletin of the university museum of the university of pennsilvania ;   no. 2 .
 - University of Pennsylvania. .