@article{topaloglu-ak a2012and,
  title={Microhardness and Surface Roughness of Glass Ionomer Cements after APF and TiF4 Applications},
  author={topaloglu-ak a,cogulu d,kocatas ersin n,sen bh},
  journal={Journal of Clinical Pediatric Dentistry},
  volume={37},
  number={1},
  pages={45--52},
  doi = {10.17796/jcpd.37.1.uu24059v066508g4},
  year={2012}
}