Gary M. Clark, Lynn G. Dressler, Marilyn A. Owens, George Pounds, Teri Oldaker, William L. McGuire,
Prediction of Relapse or Survival in Patients with Node-Negative Breast Cancer by DNA Flow Cytometry New England Journal of Medicine. ,vol. 320, pp. 627- 633 ,(1989) ,
10.1056/NEJM198903093201003