TY  - RPRT
TI  - Pyruvic acid as an etching agent.
AU  - D H Retief
AU  - J Bischoff
AU  - E H van der Merwe
PY  - 1976
DO  - 10.1111/j.1365-2842.1976.tb00950.x
UR  - https://pubmed.ncbi.nlm.nih.gov/789829/
ID  - 789829
ER  -