E. . A. Wist, H. . H. Sommer, B. Østenstad, T. Risberg, Y. . Bremnes, and I. Mjaaland, “Oral capecitabine in anthracycline- and taxane-pretreated advanced/metastatic breast cancer”, AO, vol. 43, no. 2, pp. 186–189, Mar. 2004.