1. Recurrent Ovarian Cancer
   Thomas J. Herzog, 2004, Clinical Cancer Research CrossRef
2. Phase II Stopping Rules That Employ Response Rates and Early Progression
   John R. Goffin et al, 2008, Journal of Clinical Oncology CrossRef
3. Phase III Trial Comparing Supportive Care Alone With Supportive Care With Oral Topotecan in Patients With Relapsed Small-Cell Lung Cancer
   Mary E.R. O'Brien et al, 2006, Journal of Clinical Oncology CrossRef