1. Hatamura Y., Gijyutu no Souzou to Sekkei, Iwanami-Shoten (2006), p.153.
2. ISO/TS 15066 (2016), Annex A.
3. ISO 13849-1(E) (2015), p.21.
4. ISO TR 14121-2(E) (2007), Annex A, B.
5. Japan Industrial Saftey and Health Association, Kikaiannzennka no kaizennjireisyuu, Heisei 20 nenndo kouseiroudousyou itaku kikaisetubi ni kakaru kikennsei yuugaisei tou no tyousa tou no jissi sokusinn jigyou (2009) (in Japanese).