1. J. Fricke (ed.), “Aerogels”, Proceedings of the 1st International Symposium on Aerogels, Springer Proceedings in Physics, Vol. 6 (Springer, Berlin, 1985).
2. R. J. Ayen and P. A. Iacobucci, Rev. Chem. Eng.
5 (1988) 1.
3. Idem, ibid.
5 (1988) 157.
4. R. Vacher, J. Phalippou, J. Pelous and T. Woigner (eds), “Proceedings of 2nd International Symposium on Aerogels”, Montpellier, Rev. Phys. Appl. Coll.
C4 suppl. 4 (1989).
5. W. J. Schmidt, R. A. Grieger-Block and T.W. Chapman, in “Chemical Engineering at Supercritical Fluid Conditions”, edited by M. E. Paulaitis, J.M.L. Penninger, R. D. Gray Jr. and P. Davidson (Ann Arbor Science, Ann Arbor, MI, 1983) pp. 445–60.