Pettersen, H., Landheim, A., Skeie, I., Biong, S., Brodahl, M., Benson, V., & Davidson, L. (2019). Helpful Ingredients in the Treatment of Long-Term Substance Use Disorders: A Collaborative Narrative Study. Subst Abuse.

Pettersen, Henning, Anne Landheim, Ivar Skeie, Stian Biong, Morten Brodahl, Victoria Benson, ja Larry Davidson. "Helpful Ingredients in the Treatment of Long-Term Substance Use Disorders: A Collaborative Narrative Study." Subst Abuse 2019.

Pettersen, Henning, et al. "Helpful Ingredients in the Treatment of Long-Term Substance Use Disorders: A Collaborative Narrative Study." Subst Abuse 2019.