@phdthesis{oai:tsukuba.repo.nii.ac.jp:00008596,
 author = {Usaborisut, Prathuang},
 month = {},
 note = {The increase of weight and volumes of farm machines used in modern mechanized agriculture have been reported as a major factor in aggravating the incidence of field soil compaction. As confirmed by many research works, the reduction of yield is mainly due to soil compaction. Moreover, it is not only the agricultural aspect but also the environmental issue that has been influenced by undesired soil compaction.Serious, widespread and long-term implications for the quality of the environment have been widely recognaized. ..., 1999},
 school = {筑波大学, University of Tsukuba},
 title = {Dynamic behavior of a hollowed, cylindrical soil specimen under cyclic torsional shear loading},
 year = {2000}
}