Evaluation of the sterilization efficacy of domestic electric drills used in orthopaedic surgeries - Goveia, Vania Regina; Pinto, Flávia Morais Gomes; Machoshvili, Irene Alexeevna; Vessoni Penna, Thereza Christina; Graziano, Kazuko Uchikawa (Brazilian Journal of Microbiology, 2009)