Influence of general self‐efficacy on the effects of a school‐based universal primary prevention program of depressive symptoms in adolescents: a randomized and controlled follow‐up study Pössel, Patrick Baldus, Christiane Horn, A.B. Hautzinger, Martin Groen, Gunter 2005 - ReposIt
School-based universal primary prevention of depressive symptoms in adolescents: Results of a 6-month follow-up. Pössel, Patrick Horn, A.B. Hautzinger, Martin Groen, Gunter 2004 - ReposIt