Duch, D. S., Bowers, S. W., Bigner, D. D., & Nichol, C. A. (1977). Dihydrofolate reductase levels in normal brain and primary CNS tumors relevant to brain tumor chemotherapy. Proceedings of the American Association for Cancer Research, Vol.18.

Duch, D. S., S. W. Bowers, D. D. Bigner, and C. A. Nichol. “Dihydrofolate reductase levels in normal brain and primary CNS tumors relevant to brain tumor chemotherapy.” Proceedings of the American Association for Cancer Research Vol.18 (January 1, 1977).

Duch DS, Bowers SW, Bigner DD, Nichol CA. Dihydrofolate reductase levels in normal brain and primary CNS tumors relevant to brain tumor chemotherapy. Proceedings of the American Association for Cancer Research. 1977 Jan 1;Vol.18.

Duch, D. S., et al. “Dihydrofolate reductase levels in normal brain and primary CNS tumors relevant to brain tumor chemotherapy.” Proceedings of the American Association for Cancer Research, vol. Vol.18, Jan. 1977.

Duch DS, Bowers SW, Bigner DD, Nichol CA. Dihydrofolate reductase levels in normal brain and primary CNS tumors relevant to brain tumor chemotherapy. Proceedings of the American Association for Cancer Research. 1977 Jan 1;Vol.18.