References
  1. Alain Serraf MD Joy Zoghby MD et al. Surgical treatment of subaortic stenosis: A seventeen-year experience The Journal of Thoracic and Cardiovascular Surgery Volume 117, Issue 4, April 1999, Pages 669-678.
  2. Sylvestre Maréchaux, Françis Juthier et al. Illustration of the echocardiographic diagnosis of subaortic membrane stenosis in adults: surgical and live three-dimensional transoesophageal findings European Journal of Echocardiography, Volume 12, Issue 1, January 2011, Page E2