Rolipram in Major Depressive Disorder: Results of a Double-Blind Comparative Study with Imipramine - Hebenstreit, G F; Fellerer, K; Fichte, K; Fischer, G; Geyer, N; Meya, U; Sastre-y-Hernández, M; Schöny, W; Schratzer, M; Soukop, W; Trampitsch, E; Varosanec, S; Zawada, E; Zöchling, R (Pharmacopsychiatry, 1989)