1. 1) Definition of Supply Chain, Collins Online English Dictionary, https://www.collinsdictionary.com/dictionary/english/supply-chain, (accessed 2019-10-03).
2. 2) T. Nishiguchi: Strategic Industrial Sourcing: The Japanese Advantage, Oxford University Press, Oxford, (1994), 123.
3. 3) F. Wynstra, F. von Corswant and M. Wetzels: J. Prod. Innov. Manag., 27 (2010), 625. https://doi.org/10.1111/j.1540-5885.2010.00741.x
4. 4) S. Nishio: Trans. Acad. Assoc. Organ. Sci., 7 (2018), 87 (in Japanese). https://doi.org/10.11207/taaos.7.2_87
5. 5) S. Nishio and S. Fujimura: Int. J. Mark. Soc. Policy, 1 (2017), 55. https://doi.org/10.17501/23621044.2017.1106