1. Grossman LI. Endodontic Practice, 7th edition. Lea & Fibiger; Philadelphia 1970. 
  2. Accepted Dental Therapeutics. 39th ed. Chicago, Council on Dental Therapeutics of the American Dental Association; 1982:303-304. 
  3. Krakow AA, Berk H. Efficient endodontic procedures with use of the pressure syringe. Dent Clin N A 1965;9:387-399. 
  4. Berk H, Krakow AA. The Endodontic Pressure Syringe. CDS Review 1975;68(9):20-23. 
  5. Berk H, Krakow AA. Endodontic treatment in primary teeth. In: Goldman HM, Gilmore HW, Irby WB, Olsen NH, Current Therapy In Dentistry. St. Louis: CV Mosby, 1974; chapter 72:500-522. 
  6. Krakow AA, Berk H, Gron P. Pulpal management in the child and adolescent. In Clark’s Clinical Dentistry 1994. JF Hardin, editor.J.B. Lippincott Company, Philadelphia. 
  7. Mehlman ES. Management of a totally fused central and lateral incisor with internal resorption perforating the lateral aspect of the root. J Endo 1978;4(6):189-191. 
  8. McElroy DL, Wach EC. Endodontic treatment with zinc oxide – Canada balsam filling material. JADA 1958;56:801-806. 
  9. Hasselgren G, Olssen B, Cvek M. Effects of calcium hydroxide on the dissolution of necrotic porcine muscle tissue. J Endo 1988;14(3):125-127.