Fu, Z., 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”. Clinical Psychology in Europe, Vol. 3, no. 3, Sept. 2021, pp. 1-24, doi:10.32872/cpe.5467.