Hama, Sarkawt M. L. and Kumar, Prashant and Harrison, Roy M. and Bloss, William J. and Khare, Mukesh and Mishra, Sumit and Namdeo, Anil and Sokhi, Ranjeet and Goodman, Paul and Sharma, Chhemendra (2020) Four-year assessment of ambient particulate matter and trace gases in the Delhi -NCR region of India. Sustainable Cities and Society, 54. pp. 102003-102020. ISSN 2210-6707