Z. Fu, H. Burger, R. Arjadi, M. H. Nauta, and C. L. H. Bockting, “Explaining the Efficacy of an Internet-Based Behavioral Activation Intervention for Major Depression: A Mechanistic Study of a Randomized-Controlled Trial”, Clin Psychol Eur, vol. 3, no. 3, p. Article e5467, Sep. 2021.