@article{oai:rakuno.repo.nii.ac.jp:00004368,
 author = {SUGITA, Shinji and 森田, 茂 and KOBARI, Tsutomu and HOSHIBA, Shinji},
 issue = {1},
 journal = {酪農学園大学紀要. 自然科学編},
 month = {Oct},
 note = {Bulletin},
 pages = {39--43},
 title = {The Effects of the Density of Cows in Free-stall Housing on Duration of the Lying Periods},
 volume = {24},
 year = {1999}
}