Howard A, Pelc SR (2009). "Synthesis of Desoxyribonucleic Acid in Normal and Irradiated Cells and Its Relation to Chromosome Breakage". International Journal of Radiation Biology and Related Studies in Physics, Chemistry and Medicine. 49 (2): 207–218. doi:10.1080/09553008514552501. ISSN0020-7616.
Howard A, Pelc SR (2009). "Synthesis of Desoxyribonucleic Acid in Normal and Irradiated Cells and Its Relation to Chromosome Breakage". International Journal of Radiation Biology and Related Studies in Physics, Chemistry and Medicine. 49 (2): 207–218. doi:10.1080/09553008514552501. ISSN0020-7616.