Preliminary research for low-cost particulate matter sensor network Csongor Báthory, Márton L. Kiss, Attila Trohák, Zsolt Dobó and Árpád Bence Palotás E3S Web Conf., 100 (2019) 00004 Published online: 10 June 2019 DOI: 10.1051/e3sconf/201910000004