TY  - RPRT
TI  - Variations in acid-etch patterns with different acids and etch times.
AU  - A Gardner
AU  - R Hobson
PY  - 2001
DO  - 10.1067/mod.2001.114643
UR  - https://pubmed.ncbi.nlm.nih.gov/11455380/
ID  - 11455380
ER  -