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2. Tierexperimentelle Untersuchungen mit dem Cytostaticum 5-Fluoruracil;Bollag;Schweiz. med. Wschr.,1957
3. Fluorinated pyrimidines. VI. Effects of 5-fluorouridine and 5-fluoro-2′-deoxyuridine on transplanted tumors;Heidelberger,1958
4. Results of treatments of malignant tumors with ftorafur;Blokhina;Cancer (Philad.),1972
5. Therapeutic effects of an aromatic retinoic acid analog on chemically induced skin papillomas and carcinomas of mice;Bollag;Europ. J. Cancer,1974