S. B.  Deshpande, Potdar, H. S., Khollam, Y. B., Patil, K. R., Pasricha, R., and Jacob, N. E., ?Room temperature synthesis of mesoporous aggregates of anatase TiO2 nanoparticles?, Materials Chemistry and Physics, vol. 97, no. 2-3, pp. 207-212, 2006.