@article{Kim_2000 author = {Deok W. Kim and Ki C. Nam and Seung J. Lee}, title = {Development of a Frequency-Dependent-Type Apex Locator With Automatic Compensation}, journal = {Critical Reviews™ in Biomedical Engineering}, issn = {0278-940X}, year = {2000}, volume = {28}, number = {3&4}, pages = {473--479} }