Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kitao Norihiko,A study of spacing effect in free recall of sentences: On full processing hypothesis.,The Japanese journal of psychology,00215236,The Japanese Psychological Association,1992,63,2,100-106,https://cir.nii.ac.jp/crid/1390001205075534976,https://doi.org/10.4992/jjpsy.63.100