[1] ( (2014-05-21 08:00:12 +09:00 版)) http://aska-r.aasa.ac.jp/dspace/bitstream/10638/1037/1/0005-031-200803-001-037.pdf

[2] BA8697693X_1_397_430.pdf, 2020-11-11T16:30:13.000Z, 2021-10-08T12:02:02.621Z http://repository.nabunken.go.jp/dspace/bitstream/11177/7980/1/BA8697693X_1_397_430.pdf#page=17