@article{muller-bolla m2009of,
  title={Definition of At-Risk Occlusal Surfaces of Permanent Molars— A Descriptive Study},
  author={muller-bolla m,courson f,droz d,lupi-pégurier l,velly am},
  journal={Journal of Clinical Pediatric Dentistry},
  volume={34},
  number={1},
  pages={35--42},
  doi = {10.17796/jcpd.34.1.n7r85u5788575766},
  year={2009}
}