1Breiman L, Friedman J, Olshen R, al et. Classification and Re: gression Trees[M]. New York: Chapman & Hall, 1984.
2Vladimir A. Valera, Veatriz A. Walter, al et. Prognostic Groups in Colorectal Carcinoma Patients Based on Tumor Cell Proliferation and Classification and Regression Tree (CART) Survival Analysis [J].Annals of Surgical Oncology, 2006, 14(1)34-40.
