1- The Propagation of Ultrashort Laser Pulses through a Linear Medium,

AIMS, (http://users.aims.ac.za/~abdelrhman/abdelrhman.pdf),

1- Luminescent properties of Y₃(Al;Ga)₅O₁₂:Tb thin films, University of the Free State, (http://etd.uovs.ac.za/cgi-bin/ETD-

browse/view_etd?URN=etd-08082014-101547).