@article{oai:kobe-ccn.repo.nii.ac.jp:00000097,
 author = {Nagano, Katsutoshi and Hikita, Hiromitsu and Katayama, Osamu and Nagano, Katsutoshi and Hikita, Hiromitsu and Katayama, Osamu},
 journal = {神戸市看護大学紀要, Bulletin of Kobe City College of Nursing},
 month = {Mar},
 pages = {1--14},
 title = {Digital Observers and Servomechanisms for Linear Dynamic Systems with Periodic Disturbances},
 volume = {2},
 year = {1998}
}