@article{roberto valencia2008deproteinization,
  title={Enamel Deproteinization and Its Effect on Acid Etching: An invitro Study},
  author={roberto espinosa,roberto valencia,mario uribe,israel ceja,marc saadia},
  journal={Journal of Clinical Pediatric Dentistry},
  volume={33},
  number={1},
  pages={13--20},
  doi = {10.17796/jcpd.33.1.ng5462w5746j766p},
  year={2008}
}