1. On the levels of radiation produced by the orthopantomograph;Paatero,1962
2. Intraorale und intracranielle Dosismaxima bei Panorama-Röntgenaufnahme der Zähne und Kiefer;Jung;Dtsch Zahnarztl Z,1963
3. Radiation exposure in jaw orthopantomography;Tammisalo,1964
4. Patient doses from orthopantomograph dental x-ray exposures;Casebow;Br J Radiol,1973
5. A comparative study of radiation doses received during examinations with the pantomograph, orthopantomograph, panorex, status-x and conventional roentgen apparatus;Altonen,1974