@article{weko_142267_1,
   author	 = "Akihiro,Ida and Takeshi,Iwashita and Makiko,Ohtani and Kazuro,Hirahara",
   title	 = "Improvement of Hierarchical Matrices with Adaptive Cross Approximation for Large-scale Simulation",
   journal	 = "Journal of information processing",
   year 	 = "2015",
   volume	 = "23",
   number	 = "3",
   pages	 = "366--372",
   month	 = "may"
}