@techreport{weko_32660_1,
   author	 = "Peter,Eades",
   title	 = "Complexity Issues in Drawing Directed Graphs",
   year 	 = "1989",
   institution	 = "Geometric Algorithms Laboratory Department of Computer Science  University of Queensland",
   number	 = "98(1989-AL-012)",
   month	 = "nov"
}