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  1. smith, j. et al., effect of catalysts on yellowing resistance of polyurethane coatings, journal of coatings technology and research, 2019, vol. 16, no. 4, pp. 987¨C995.
  2. nakamura, t. et al., bismuth-based catalysts for environmentally friendly epoxy resin systems, progress in organic coatings, 2020, vol. 145, 105678.
  3. johnson, r. and lee, h., advanced catalysts for high-performance architectural coatings, paint & coatings industry journal, 2021, vol. 37, issue 2, pp. 54¨C62.

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