@phdthesis{oai:ynu.repo.nii.ac.jp:00011437,
 author = {HA, THAM PHAN},
 month = {Sep},
 school = {横浜国立大学},
 title = {Study on high efficiency electrohydraulic drive system using a servo motor driven variable speed, variable displacement hydraulic pump},
 year = {2021}
}