@article{weko_60326_1,
   author	 = "Yoshiteru,Ishii",
   title	 = "Waiting and Improvement Factor in Time-Sharing Systems",
   journal	 = "Information Processing in Japan",
   year 	 = "1963",
   volume	 = "3",
   number	 = "0",
   pages	 = "1--11",
   month	 = "jan"
}