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Mohd Nadzir MS, Mohd Nor MZ, Mohd Nor MFF, A Wahab MI, Ali SHM, Otuyo MK, Abu Bakar MA, Saw LH, Majumdar S, Ooi MCG, et al. Risk Assessment and Air Quality Study during Different Phases of COVID-19 Lockdown in an Urban Area of Klang Valley, Malaysia. Sustainability. 2021; 13(21):12217. https://doi.org/10.3390/su132112217

Mohd Nadzir, Mohd Shahrul, Mohd Zaim Mohd Nor, Mohd Fadzil Firdzaus Mohd Nor, Muhamad Ikram A Wahab, Sawal Hamid Md Ali, Muhsin Kolapo Otuyo, Mohd Aftar Abu Bakar, Lip Huat Saw, Shubhankar Majumdar, Maggie Chel Gee Ooi, and et al. 2021. "Risk Assessment and Air Quality Study during Different Phases of COVID-19 Lockdown in an Urban Area of Klang Valley, Malaysia" Sustainability 13, no. 21: 12217. https://doi.org/10.3390/su132112217

Mohd Nadzir, M. S., Mohd Nor, M. Z., Mohd Nor, M. F. F., A Wahab, M. I., Ali, S. H. M., Otuyo, M. K., Abu Bakar, M. A., Saw, L. H., Majumdar, S., Ooi, M. C. G., Mohamed, F., Hisham, B. A., Abd Hamid, H. H., Khaslan, Z., Mohd Ariff, N., Anuar, J., Tok, G. R., Ya’akop, N. A., & Mohd Meswan, M. (2021). Risk Assessment and Air Quality Study during Different Phases of COVID-19 Lockdown in an Urban Area of Klang Valley, Malaysia. Sustainability, 13(21), 12217. https://doi.org/10.3390/su132112217