McCubbin, J. ., Wilson, J. ., Bruehl, S. ., Ibarra, P. ., Carlson, C. ., Norton, J. ., & Colclough, G. . (1996). Relaxation training and opioid inhibition of blood pressure response to stress. Journal of Consulting and Clinical Psychology, 64(3), 593-601. https://doi.org/10.1037//0022-006x.64.3.593

Ibarra, P. ., Bruehl, S. ., McCubbin, J. ., Carlson, C. ., Wilson, J. ., Norton, J. ., & Montgomery, T. . (1994). An unusual reaction to opioid blockade with naltrexone in a case of post-traumatic stress disorder. Journal of Traumatic Stress, 7(2), 303-9. https://doi.org/10.1007/BF02102950

Bruehl, S. ., McCubbin, J. ., Wilson, J. ., Montgomery, T. ., Ibarra, P. ., & Carlson, C. . (1994). Coping styles, opioid blockade, and cardiovascular response to stress. Journal of Behavioral Medicine, 17(1), 25-40. https://doi.org/10.1007/BF01856880