Here is a link to the influential UK NICE guidelines (2005). The document was published by the Royal College of Psychiatrists and the British Psychological Society and they include Neurofeedback as a treatment for PTSD in their review (via the Peniston & Kulkosky protocol).
Here is the link (relevant info on p 54): Post-traumatic stress disorder – The management of PTSD in adults and children in primary and secondary care