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Krause, Merton; Lutz, Wolfgang; Saunders, Stephen (2007). Empirically certified treatments or therapists: The issue of separability. Psychotherapy, 44(3), pp. 347-353. Washington, D.C.: American Psychological Association 10.1037/0033-3204.44.3.347
Krause, Merton; Lutz, Wolfgang (2006). How we really ought to be comparing treatments for clinical purposes. Psychotherapy, 43(3), pp. 359-361. Washington, D.C.: American Psychological Association 10.1037/0033-3204.43.3.359
