1. T. Adrian, H. Schoenmakers, Proc. of the 3rd European Congress of Chemical Engineering, Nuernberg, Germany 2001.
2. P. Lievo et al., Annual Meeting Archive - American Institute of Chemical Engineers, Indianapolis, IN, November 2002.
3. Executive order D-52-02 by the Governor of the State of California, March 2002.
4. Executive order D-5-99 by the Governor of the State of California, March 1999.