--4th Workshop on Computer Architecture Research Directions,
https://ieeexplore.ieee.org/document/7542457
Mark D. Hill; Dave Christie; David Patterson; Joshua J. Yi; Derek Chiou; Resit Sendag
And 2015 full video recording of the debate between Patterson and Christie: "CARD 2015 Mini-Panel #1: Open Source versus Proprietary ISAs"
https://www.youtube.com/watch?v=novCbl4Wq3I