@phdthesis{oai:tsukuba.repo.nii.ac.jp:00008496,
 author = {Junyusen, Payungsak},
 month = {},
 note = {Large-scale farming requires comparatively large and heavy agricultural machinery.Because large implements are too heavy to be mounted, trailing implements are commonlyused for tillage, harrowing, spraying, and seeding operations. ..., 2004, Includes bibliographical references},
 school = {筑波大学, University of Tsukuba},
 title = {Development of guidance system of an agricultural trailer for approaching to target position},
 year = {2005}
}