1. D. Jeffreys , Aspirin: The Remarkable Story of a Wonder Drug , Chemical Heritage Foundation , 2008 , ISBN 9781596918160
2. Complex synthesis yields breast-cancer therapy
3. G. Pisano , The Development Factory – Unlocking the Potential of Process Innovation , Harvard Business School Press , Boston , 1997
4. N. G. Anderson , Practical Process Research and Development , Academic Press , San Diego , 2000
5. Current complexity: a tool for assessing the complexity of organic molecules