- Characterization of the tryptophan residues of human placental ribonuclease inhibitor and its complex with bovine pancreatic ribonuclease a by steady-state and time-resolved emission spectroscopy. Sardar, P.S., Maity, S.S., Ghosh, S., Chatterjee, J., Maiti, T.K., Dasgupta, S. The journal of physical chemistry. B, Condensed matter, materials, surfaces, interfaces & biophysical. (2006)