najafpoor, AliAsghar, et al. “Trend Analysis of Air Quality Index Criteria Pollutants (CO, NO2, SO2, PM10 and O3) Concentration Changes in Tehran Metropolis and Its Relationship With Meteorological Data, 2001-2009”. Journal of Behdasht Dar Arseh (i.E., Health in the Field), vol. 3, no. 2, Apr. 2016, pp. 17-26, doi:10.22037/jhf.v3i2.8841.