Acharya PV. "The isolation and partial characterization of age-correlated oligo-deoxyribo-ribonucleotides with covalently linked aspartyl-glutamyl polypeptides". Johns Hopkins Medical Journal. Supplement (1). 1971: 254–60. PMID5055816.
Kobayashi Y, Narumi I, Satoh K, Funayama T, Kikuchi M, Kitayama S, Watanabe H. "Radiation response mechanisms of the extremely radioresistant bacterium Deinococcus radiodurans". Uchu Seibutsu Kagaku. 18 (3). November 2004: 134–35. PMID15858357.