@inproceedings{sgem2009paper,
  title = {USE OF ENVIRONMENTAL PREFERENCE IN PURCHASING DECISIONS OF HEALTHCARE INSTITUTIONS},
  author = {O. Ozyaral and O. Yarar and A. Tukel},
  booktitle = {9th International Multidisciplinary Scientific GeoConference SGEM2009},
  year = {2009},
  pages = {785-790},
  publisher = {SGEM Scientific GeoConference},
  doi = {}
}