Urushibara A, Shikazono N, O'Neill P, Fujii K, Wada S, Yokoya A. LET dependence of the yield of single-, double-strand breaks and base lesions in fully hydrated plasmid DNA films by 4He2+ ion irradiation. J. Radiat. Biol. 2008; 84: 23-33.
Yokoya A, Fujii K, Ushigome, T Shikazono, Urushibara A, Watanabe R. Yields of strand breaks and base lesions induced by soft X-rays in plasmid DNA. Radiat Prot Dosimetry 2006; 122: 86-88.