1. Gianni L., Anthracycline resistance: the problem and its definition. Sem. Oncol 1997;24:S10-11–7.
2. The anthracyclines: will we ever find a better doxorubicin?;Weiss;Sem. Oncol.,1992
3. Understanding the barriers to drug delivery: high resolution in vivo imaging is key;Jain;Clin. Cancer Res.,1999
4. Doxorubicin gradients in human breast cancer;Lankelma;Clin. Cancer Res.,1999
5. Cellular membrane permeability of anthracyclines does not correlate with their delivery in a tissue isolated tumor;Heijn;Cancer Res.,1999