1. Clinical microbiology in endodontics;Naidorf;Dent Clin North Am,1974
2. Dependence of the results of pulp therapy on certain factors: an analytical study based on radiographic and clinical follow-up examination;Strindberg;Acta Odontol Scand,1956
3. Kriterien für den Erfolg der Vitalexstirpation;Ketterl;Dtsch Zahnaerzti Z,1965
4. The frequency, technical standard and results of endodontic therapy;Molven,1974