An internet-based intervention for depressive symptoms: Preliminary data on the contribution of behavioral activation and positive psychotherapy strategies - Romero, S.; Mira, A.; Bretón-Lopez, J.; Díaz-García, A.; Díaz-Sanahuja, L.; García-Palacios, A.; Botella, C. (Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST, 2019)