1. http://www.chem21.eu/
2. P. T.
Anastas
and J. C.Warner, in Green Chemistry: Theory and Practice, Oxford University Press, New York, 1998, ch 1, p. 30
3. L.
Summerton
and A.Constantinou, in Green and Sustainable Medicinal Chemistry for the 21st Century Pharmaceutical Industry, ed. L. Jones, L. Summerton, H. Sneddon and J. Clark, RSC, Cambridge (submitted)
4. Overcoming barriers to green chemistry in the pharmaceutical industry – the Green Aspiration Level™ concept
5. EcoScale, a semi-quantitative tool to select an organic preparation based on economical and ecological parameters