"Frontiers in Physics"(PDF). 13 December 1988. Proceedings of the Second National Symposium on Frontiners in Physics. Archived from the original(PDF) on 23 மே 2013. Retrieved 16 January 2012.
"Frontiers in Physics"(PDF). 13 December 1988. Proceedings of the Second National Symposium on Frontiners in Physics. Archived from the original(PDF) on 23 மே 2013. Retrieved 16 January 2012.