@techreport{weko_31536_1,
   author	 = "村尾裕一 and 佐々木建昭",
   title	 = "An Efficient Gaussian Elimination Method for Symbolic Linear Systems",
   year 	 = "1980",
   institution	 = "東大・理, 理研",
   number	 = "9(1980-PRO-012)",
   month	 = "jun"
}