@article{article640,
  title = {Investigating the effect of photoinitiator ratio on the polymerization shrinkage in dental composites by two comparative methods},
  author = {TEKEREK, B.S. and YÃœCEL, S. and AYDIN, Ä. and ÃœNAL, A.},
  journal = {Sigma Journal of Engineering and Natural Sciences},
  year = {2015},
  volume = {33},
  pages = {33-40},
  doi = {}
}