The Indian Express filed an RTI on the question of foreign research scholars being denied visas. Finally, they have a positive response. Read on:
Shubhajit Roy, Now you will know why and how Govt rejects foreign scholars, asks them to change subjects, Indian Express, December 02, 2007.
Just to remind you, here is a link to the older post on this issue:
Back in Alberuni's India (But did we ever leave?)