TY  - JOUR
TI  - The effect of oxidation on the structure properties and calorific values of lignites
AU  - ELBEYLÄ°, Ä.Y.
AU  - PÄ°ÅžKÄ°N, S.
JO  - Sigma Journal of Engineering and Natural Sciences
PY  - 2004
VL  - 22
SP  - 43
EP  - 49
DO  - 
ER  -