- CLEA Technologies

- Delft University of Technology (Biocatalysis & Organic Chemistry)

- "Green Chemistry" (journal)

- "Green Chemistry and Catalysis" (book Roger Sheldon)

- Queen's University Ionic Liquid Laboratories (Belfast)

- UK Centre of Excellence for Biocatalysis, Biotransformations and Biomanufacturing

- Wikipedia: Cross-linked Enzyme Aggregates (CLEAs)


Website of the US Environmental Protection Agency (EPA):

- Green Chemistry

- Presidential Green Chemistry Challenge Awards

- Twelve Principles

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