WASET
    F. Halek and  A. Kavousi and  F. Hassani,  Evaluation of Indoor-Outdoor Particle Size Distribution in Tehran's Elementary Schools.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2009, vol. 33(9). 522 - 525
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/8988.