Heuser, Heidi. "Nishimura's catalyst". Product Number: 3000034604. Umicore: Precious Metal Chemistry. Archived from the original on 3 பெப்பிரவரி 2016. Retrieved 29 January 2016. {{cite web}}: Check date values in: |archive-date= (help)
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Heuser, Heidi. "Nishimura's catalyst". Product Number: 3000034604. Umicore: Precious Metal Chemistry. Archived from the original on 3 பெப்பிரவரி 2016. Retrieved 29 January 2016. {{cite web}}: Check date values in: |archive-date= (help)