To understand the impact of the odd-even policy in Delhi researchers will need to take into account prevailing weather conditions of not just Delhi, but also its outskirts and neighbouring states.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/weather-conditions-and-air-pollution-impact-odd-even-policy-delhi
[2] http://admin.indiaenvironmentportal.org.in/category/author/saon-ray
[3] http://admin.indiaenvironmentportal.org.in/category/author/nandini-kumar
[4] http://admin.indiaenvironmentportal.org.in/category/journal/economic-and-political-weekly
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/odd-even-numbered-cars
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/centre-science-and-environment-cse
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pm-25
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/central-pollution-control-board-cpcb
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rspm-pm-10
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urban-air-quality
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cars-and-congestion
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution