@ARTICLE{10.3389/fenvs.2013.00003, AUTHOR={Varotsos, Costas}, TITLE={The grand challenges to air pollution}, JOURNAL={Frontiers in Environmental Science}, VOLUME={1}, YEAR={2013}, URL={https://www.frontiersin.org/articles/10.3389/fenvs.2013.00003}, DOI={10.3389/fenvs.2013.00003}, ISSN={2296-665X} }