@inproceedings{sgem2021s03039,
  title = {COAL COMPANIES IN VIETNAM: PRODUCTION SUSTAINABILITY ANALYSIS},
  author = {Marina Nevskaya and Oksana Marinina and Tatiana Kosovtseva and Chu Thi Que},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Science and Technologies in Geology, Exploration And Mining},
  year = {2021},
  pages = {317-324},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2021/1.1/s03.039}
}