@article{weko_16213_1,
   author	 = "永坂,秀子 and 福井,義成",
   title	 = "数値微分の誤差",
   journal	 = "情報処理学会論文誌",
   year 	 = "1981",
   volume	 = "22",
   number	 = "5",
   pages	 = "411--416",
   month	 = "sep"
}