1,200-year-old Perfection of Wisdom Uncovered in Drepung

"A few years ago, or well, to speak truly, even today, if I were to say in front of a group of Tibetanists that manuscripts were preserved in Central Tibetan monasteries that are older than the Dunhuang documents (well, older than the bulk of them), they would have rolled their eyes, glanced at me askance, then looked away as if waiting to hear what the next joke might be. Today the joke is on them."

http://tibeto-logic.blogspot.co.uk/2012/07/1200-year-old-perfection-of-wisdom.html