Request for research leads: Indian philosophical debate CE VIII

My Chilean Bufriend makes the following research request:

"I am investigating a "lost in collective memory" debate between the Advaita-Vedantas and Buddhists in late CE VIII, between Shankara and Buddhism. They say they won over, and since then, among with other circumstances Buddhism was lost in india. However my personal guess is that the debate was done over with a Cittamatra scholar and not a Madhyamika-Prasangika.

Well the only thing I could grasp on the net was a very summarized analysis by a professor from the University of Hawaii, based in a lecture before the Bombay Branch of the Royal Asiatic Society, November 25, 1952. This paper was called "`Sa.mkara's Arguments Against the Buddhist" by Daniel H. H. Ingalls. May be you have some other on-line resources that could help me to do more research..."

Any ideas, friends?

Dignaga, 5th Century Indian Buddhist scholar. One of the founders of the great Indian Buddhist philosophical tradition.