Kona coroutine papers are:
http://wg21.link/P0054 (Coroutines: Reports from the field) http://wg21.link/P0055 (On Interactions Between Coroutines and Networking Library) http://wg21.link/P0057 (Wording for Coroutines (Revision 3))
http://wg21.link/P0070 (Coroutines: Return Before Await) http://wg21.link/P0071 (Coroutines: Keyword alternatives)
Demo and slides from CppCon 2015 are in 2015_CppCon folder. Where else?