1. Radiation hazards to the patient from oral roentgenography;Nolan;JADA,1953
2. Radiation exposure to the head and abdomen during oral roentgenology;Budowsky;JADA,1956
3. Patient exposure to ionizing radiation in dental radiography;Baily;Radiol,1957
4. Radiation hazards in dental radiography;Blackman;Br Dent J,1957
5. Radiation doses in oral radiology;Bjärngard;Odontol Rev,1959