1. Six cases of congenital complete heart block followed for 34 to 40 years;Campbell, M.; Emanuel, R.;British Heart Jrournal,1967
2. Surgical Treatment of Congenital Heart Disease;Cooley, D.A.; HaUlman, G.L.,1966
3. Postoperative complete heart block in children;Fryda, R.J.; Kaplan, S.; Helmsworth, J.A.;British Heart Journal,1971
4. Nadas, A. S., and Fyler, D. C. (1972). Pediatric Cardiology, p. 372.
5. Bundle of His recordings in congenital heart disease;Wolff, G.S.; Freed, M.D.; Ellison, R.C.;British Heart Journal,1973