Roy, Sutapa and Ganguli, Dibyendu (1996) Spectroscopic properties of low Fe3+-doped silica gels. Journal of Non-Crystalline Solids, 195 (1-2). pp. 38-44. ISSN 0022-3093

Roy, Sutapa (1994) Spectrophotometric Studies on Transition Metal Doped Silica and Silicate Gels and Glasses. PhD thesis, Jadavpur University.

Roy, Sutapa and Ganguli, Dibyendu (1992) Optical-properties of Ni-2+-doped silica and silicate gel monoliths. Journal of Non-Crystalline Solids, 151 (3). pp. 203-208. ISSN 0022-3093