TY  - RPRT
TI  - Phosphoric acid penetration during direct bonding.
AU  - R S Smith
AU  - J A Spinelli
AU  - D J Tartakow
PY  - 1976
DO  - 10.1016/0002-9416(76)90278-5
UR  - https://pubmed.ncbi.nlm.nih.gov/790972/
ID  - 790972
ER  -