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  1. r. f. storey, polyurethane catalysts: mechanisms and applications, journal of cellular plastics, 2020
  2. european polyurethane association (epur), sustainable building with polyurethane insulation, technical report no. 2021/05
  3. astm international, standard guide for use of amine catalysts in rigid polyurethane foams, astm d7988-19

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