Wilhelm F. Maier, Frank M. Bohnen, Jens Heilmann, Stephan Klein, Hee-Chan Ko, Michael F. Mark, Serge Thorimbert, Ingo-C. Tilgner, Michael Wiedorn,
Sol-Gel Methods for the Production of Novel Catalytic Materials Springer Netherlands. pp. 27- 46 ,(1995) ,
10.1007/978-94-011-0337-4_2