A. Helfer

Inability of laser and rotary instrumentation to eliminate root canal infection.

G. Hasselgren, A. Guerrero, D. Jha, 2006, Journal of the American Dental Association.

Determination of the moisture content of vital and pulpless teeth.

H Schilder, S. Melnick, H. Schilder, 1972, Oral surgery, oral medicine, and oral pathology.