1. Gatenby RA, Kessler HB, Rosenblum JS, Coia LR, Moldofsky PJ, Hartz WH et al. Oxygen distribution in squamous cell carcinoma metastases and its relationship to outcome of radiation therapy. Int J Radiat Oncol Biol Phys 1988; 14: 831–838.
2. Hockel M, Schlenger K, Knoop C, Vaupel P . Oxygenation of carcinomas of the uterine cervix: evaluation by computerized O2 tension measurements. Cancer Res 1991; 51: 6098–6102.
3. Vaupel P, Schlenger K, Knoop C, Hockel M . Oxygenation of human tumors: evaluation of tissue oxygen distribution in breast cancers by computerized O2 tension measurements. Cancer Res 1991; 51: 3316–3322.
4. Brizel DM, Scully SP, Harrelson JM, Layfield LJ, Bean JM, Prosnitz LR et al. Tumor oxygenation predicts for the likelihood of distant metastases in human soft tissue sarcoma. Cancer Res 1996; 56: 941–943.
5. Dachs GU, Patterson AV, Firth JD, Ratcliffe PJ, Townsend KM, Stratford IJ et al. Targeting gene expression to hypoxic tumor cells. Nat Med 1997; 3: 515–520.