@techreport{weko_21348_1,
   author	 = "Neil,Maiden and Nina,Limbachia",
   title	 = "Using Scenarios to Specify an Air Traffic Control System",
   year 	 = "2003",
   institution	 = "City University  London  UK, City University  London  UK",
   number	 = "60(2003-SE-142)",
   month	 = "may"
}