Sanjeev Rathore* , Tanuj K. Joshi, M. G. H. Zaidi** and A. K. Rai 2004. Photoacoustic Evaluation of Supercritically Synthesized Polyacrylic Acid Graft Polybisphenol- A- Carbonate. Journal of International Academy of Physical Sciences. 8, 1-4 (Dec. 2004), 63–67.