Some theoretical foundations for you: Here is an article published in the Journal of Cognitive Psychotherapy: An International Quarterly, Volume 9, Number 1,1995 by Constance Dancu, Edna B. Foa, Jan L. Niederee and yours truly, Mervin Smucker PhD.
Link to Mervin Smucker’s german homepage.
Follow Mervin Smucker on Twitter.
My YouTube channel, containing several educational videos on trauma therapy and the IRRT method (in German).
A presentation about the early usage of imagery in trauma therapy.