Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ogasawara Jiei,The gradient of density of stimuli and depth perception II,The Japanese journal of psychology,00215236,The Japanese Psychological Association,1966,37,1,31-35,https://cir.nii.ac.jp/crid/1390282680056280064,https://doi.org/10.4992/jjpsy.37.31