1. Therapy for the Divergent Pulpless Tooth by Continued Apical Formation;Frank;J. Amer. Dent. Ass,1966
2. A Conservative Approach and Procedure to Fill an Incompletely Formed Root Using Calcium Hydroxide as an Adjunct;Michanowicz;J. Dent. Child,1967
3. Inducing Root End Closure of Nonvital Permanent Teeth;Steiner;J. Dent. Child,1968
4. Induction of Root End Closure;Van Hassel;J. Dent. Child,1970
5. Induction of Foramenal Closure;Van Hassel;J. Canad. Dent. Ass,1969