@article{article1132,
  title = {The effect of oxidation on the structure properties and calorific values of lignites},
  author = {ELBEYLÄ°, Ä.Y. and PÄ°ÅžKÄ°N, S.},
  journal = {Sigma Journal of Engineering and Natural Sciences},
  year = {2004},
  volume = {22},
  pages = {43-49},
  doi = {}
}