1. Purine N-oxides. XVI. Oncogenic derivatives of xanthine and guanine;Brown;Cancer Res.,1965
2. Purine N-oxides. XIX. On the oncogenic N-oxide derivatives of guanine and xanthine and a nononcogenic isomer of xanthine N-oxide;Sugiura;Cancer Res.,1967
3. Studies on the oncogenicity of 3-hydroxyxanthine;Teller;Cancer Res.,1970
4. A comparison of the oncogenicities of 3-hydroxyxanthine, guanine 3-N-oxide, and some related compounds;Sugiura;Cancer Res.,1970
5. Correlations between oncogenic and chemical properties of several derivatives of 3-hydroxyxanthine and 3-hydroxyguanine;Brown;Cancer Res.,1973