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"ISO 5832-1:2024". ISO: International Organization for Standardization. 1 April 2024. Archived from the original on 3 April 2025. Retrieved 3 April 2025.
"ISO 10993-6:2016". ISO: International Organization for Standardization. 1 December 2016. Archived from the original on 3 April 2025. Retrieved 3 April 2025.
"ISO 10993-10:2021". ISO: International Organization for Standardization. 1 November 2021. Archived from the original on 3 April 2025. Retrieved 3 April 2025.
"ISO 10993-11:2017". ISO: International Organization for Standardization. 1 September 2017. Archived from the original on 3 April 2025. Retrieved 3 April 2025.
"ISO 5832-3:2021". ISO: International Standards Organization. 1 November 2021. Archived from the original on 7 April 2025. Retrieved 7 April 2025.
"ASTM F67-13(2017)"(PDF). ASTM F67-13(2017) | iTeh Standards. 31 March 2025. Archived(PDF) from the original on 31 March 2025. Retrieved 31 March 2025.
Rishor-Olney, Colton R.; Gnugnoli, David M. (2025), "Nickel Allergy", StatPearls, Treasure Island (FL): StatPearls Publishing, PMID32491570, retrieved 27 April 2025
Laeijendecker, R; Van Joost, Th (1994). "Oral manifestations of gold allergy". Journal of the American Academy of Dermatology. 30 (2): 205–9. doi:10.1016/S0190-9622(94)70018-4. PMID8288779.
Rishor-Olney, Colton R.; Gnugnoli, David M. (2025), "Nickel Allergy", StatPearls, Treasure Island (FL): StatPearls Publishing, PMID32491570, retrieved 27 April 2025
"ISO 5832-1:2024". ISO: International Organization for Standardization. 1 April 2024. Archived from the original on 3 April 2025. Retrieved 3 April 2025.
"ISO 10993-6:2016". ISO: International Organization for Standardization. 1 December 2016. Archived from the original on 3 April 2025. Retrieved 3 April 2025.
"ISO 10993-10:2021". ISO: International Organization for Standardization. 1 November 2021. Archived from the original on 3 April 2025. Retrieved 3 April 2025.
"ISO 10993-11:2017". ISO: International Organization for Standardization. 1 September 2017. Archived from the original on 3 April 2025. Retrieved 3 April 2025.
"ASTM F67-13(2017)"(PDF). ASTM F67-13(2017) | iTeh Standards. 31 March 2025. Archived(PDF) from the original on 31 March 2025. Retrieved 31 March 2025.