1. http://azom.com. Accessed July 2009.
2. Lewin, M.Handbook of Fiber Chemistry, 3rd ed.CRC Press,Boca Raton, FL, 2007; p779.
3. http://videopreservation.stanford.edu/library. Accessed July 2009. An excellent summary of the problems related to film storage is provided by history_science storage of acetate base film 16b.pdf.