1. 1.  Alam, A., and Hatzopoulou, M., (2014), “Reducing transit bus emissions: Alternative fuels or traffic operations?” Journal of Atmospheric Environment, 89, 129-139.
   2. Buonanno, G., Fuoco, F.C., and Stabile, L., (2011), “Influential parameters on particle exposure of pedestrians in urban microenvironments.” Atmos. Environ. 45 (7), 1434e1443.
   3. Gokhale S. (2009), “Laboratory manual of air pollution sampling and analysis.” Laboratory manual, 1-47.
   4. Gujarathi A. (2013-14), “Indoor air quality investigation in school buildings in Sangli city” Dissertation report, 1-52.
   5.  Hess D. B., Ray P. D., Stinson A. E. and Park J., (2010), “Determinants of exposure to fine particulate matter (PM2.5) for waiting passengers at bus stands” Journal of Atmospheric Environment, 44, 5174-5182.
   6.  Li W., Li Y., Wei Y., Bao L. and Ma G., (2015), “Incorporating emissions reduction in the site evaluation of urban bus stands near intersections” Journal of COTA International Conference of Transportation Professionals , 3362-3374.