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Gyan P. Sharma gratefully acknowledges Council of Scientific and Industrial Research, India and MK thanks ISRO-SAC (Space Application Centre) for funding support.
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Sharma, G.P., Kumar, M. & Raghubanshi, A.S. Urbanization and road-use determines Calotropis procera distribution in the eastern Indo-Gangetic plain, India. AMBIO 39, 194–197 (2010). https://doi.org/10.1007/s13280-010-0026-3
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DOI: https://doi.org/10.1007/s13280-010-0026-3