1. Preparation of the constricted canals by modified K-type files;Kobayashi;Jpn J Conserv Dent,1988
2. New electronic canal measuring device based on the ratio method;Kobayashi;J Endodon,1994
3. Clinical observations on a newly designed electronic apex locator;Christie;J Canad Dent Assoc,1993
4. Enlargement of constricted canals;Kobayashi;Jpn J Conserv Dent,1993
5. Endodontic practice;Grossman,1978