Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) YAMAMOTO Ken,Recent Trend of Ground Facilities,Journal of the Society of Mechanical Engineers,00214728,The Japan Society of Mechanical Engineers,1962,65,518,383-387,https://cir.nii.ac.jp/crid/1390282680893002240,https://doi.org/10.1299/jsmemag.65.518_383