5: The advice in previous pages is derived from Tinnitus Retraining Therapy as devised by Dr. Jonathan Hazell and Dr. Pawel Jastreboff, plus information from methods for dealing with chronic pain. The resources listed below are in general in accordance with the Hazell/Jastreboff method. 

From the originator of Retraining Therapy: http://www.tinnitus-pjj.com/

https://tinnitusaustralia.org.au/

https://www.healthyhearing.com/report/52940-Tinnitus-habituation-how-to-tune-out-the-ringing-in-your-ears

https://www.hearingaidknow.com/tinnitus-retraining-therapy

https://www.nhs.uk/conditions/tinnitus/

https://www.tinnitus.org.uk/