1. Odontomes of the Axial Core Type;Lau;Brit. D. J,1955
2. Dens Invaginatus;Oehlers;Oral Surg., Oral Med. & Oral Path,1957
3. Dens Invaginatus;Oehlers;Oral Surg., Oral Med. & Oral Path,1957
4. A Clinical, Roentgenological and Genetical Study of Permanent Upper Lateral Incisors;Grahnen;Odont. revy,1959
5. Hypodontia in the Permanent Dentition;Grahnen;Odont. revy,1956