1. Specification no. 59 for portable steam sterilizers for use in dentistry,1992
2. Critical steps in instrument cleaning: removing debris after sonication;Burkhart;JADA,1997
3. Recommended infection control practices for dentistry;MMWR,1993
4. Practical infection control in dentistry;Cottone,1996
5. Sterilization, disinfection, and asepsis in dentistry;Miller,1991