Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Shiro Itano and Michio Tsutsumi and Seiichi Sakanoue,Variant of estimation method of aboveground plant biomass in grassland with the gamma model. 2. Proposal of a modified method with visual observation and tests in Zoysia pastures,Grassland science,17446961,[Nasushiobara] : Japanese Society of Grassland Science ; 2005-[2020],2006-06,52,2,53-59,https://cir.nii.ac.jp/crid/1523106605544984192,