DNA fragmentation by gamma radiation and electron beams using atomic force microscopy - González, Luis Nieto; Arruda Neto, João Dias de Toledo; Cotta, Monica A; Carrer, Helaine; Garcia, Fermin; Silva, Ricardo A S; Moreau, Antonio L. D; Righi, Henriette; Genofre, Godofredo da Camara (Journal of Biological Physics, 2012)