1. Studies in tooth development: the growth pattern of human teeth. Part II;Schour;J Am Dent Assoc.,1940
2. Incidence of supernumerary and congenitally missing teeth;Byrd;J Dent Child.,1943
3. Hypodonti i det permanente tannsett;Hunstadbraten;Nor Tannlaegeforen Tid.,1964
4. Hypodontia of permanent teeth. An orthopantomographic study;Haavikko;Suom Hammaslaak Toim.,1971
5. Hypodontia in the permanent dentition. A clinical and genetical investigation;Grahnen;Odont Revy.,1956