1. Brustdruenschwellungen bei mannlichen Jugendlichen des Pubertatsalters (Pubertatsmakromastie);Schmidt-Voigt;Z Kinderheilkd,1941
2. Gynaecomastia. Glebe, New South Wales;Hall,1959
3. Breast masses in adolescents;Schydlower;Am Fam Physician,1982
4. Williams textbook of endocrinology;Franz,1998
5. The pathogenesis of gynecomastia;Wilson;Adv Intern Med,1980