1. Periapical surgery;Trice;Dent Clin North Am,1959
2. Retrograde filling of the root canal;Nicholls;Oral Surg,1962
3. Endodontic practice;Grossman,1981
4. Results of retrograde root filling with special reference to amalgam and Cavit as root filling material;Persson;Swed Dent J,1974
5. Retrograde root filling with amalgam and Cavit;Finne;Oral Surg,1977