@inproceedings{sgem2021s1951,
  title = {LOCKDOWN IMPACT ON AMBIENT AIR QUALITY IN THE CONTEXT OF COVID-19 PANDEMIC},
  author = {Vasilica Vasle and Cristian Petcu and Alina Mihaela Dima and Mihaela Ion},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Energy and Clean Technologies},
  year = {2021},
  pages = {303-310},
  publisher = {STEF92 Technology},
  doi = {10.5593/sgem2021/4.1/s19.51}
}