Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Masao Ikeda and Eiichi Muramatsu,An extended parameter estimation method via multiple observers,Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228),,IEEE,2002-11-13,,,,https://cir.nii.ac.jp/crid/1870865117618554112,https://doi.org/10.1109/.2001.980333