Centre for Space Science
          School of Physics
          North-West University
          Potchefstroom Campus
          Private Bag X6001
          Potchefstroom
          2520 
          Republic of South Africa

	Tel:	+27 18-299-2422
	Fax:	+27 18-299-2421
	E-Mail:	pieter.stoker@nwu.ac.za