Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OKISHIO NOBUO,ON “THE NATURAL RATE OF UNEMPLOYMENT”,The Economic Studies Quarterly (Tokyo. 1950),0557109X,JAPANESE ECONOMIC ASSOCIATION,1980,31,1,1-9,https://cir.nii.ac.jp/crid/1390282680460151936,https://doi.org/10.11398/economics1950.31.1_1