Shazly, E.M. <br/><br/>
Geology, petrogenesis and mode of formation of asbestos vermiculite deposits at hafafit, egypat. 

 - Cairo-EG :   Board,   1975. 
 - páginas 87-104::   ilustraciones blanco y negro 
 - Irregular 
 - Vol. 19, no. 2 (1975) 
 - Egyptian Journal of Geology ;   no. 2 .
 - The National Information & Documentation Centre, NIDOC. .