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“…Reprint: Monthly journal of Ohara Institute for Social Research (Tokyo). - (2001):no.506. - P. 31-69. …”

“…Reprint: Monthly Journal of Ohara Institute for Social Research. - Tokyo. - (2000):no.499. - p. 48-63. …”

“…Reprint : Monthly Journal of Ohara Institute for Social Research, Tokyo. - (2006):no.566, p.29-53. Text in Japanes, summary in English.…”

“…The Economic & Social Research Institute. Paper no 68, February 1973. …”