Evaluation of escherichia coli cells damages induced by ultraviolet and proton beam radiation - Kappke, Jacqueline; Silva, Edilsa Rosa da; Schelin, Hugo Reuters; Pachuk, Sergei A; Pashchuk, Artem; Oliveira, Analisa de; Carlin Filho, Nelson; Szanto, Eloisa Madeira; Takahashi, Jun; Souza, Jairo Cavalcante de (Brazilian Journal of Physics, 2005)