1. G. Bella. Does pollution affect economic growth? University of Cagliari, 21 June, 2003. (http://www.feem-web.it/ess/ess03/students/bella.pdf).
2. Health and economic impacts of air pollution in China: a comparison of the general equilibrium approach and human capital approach;Wan;Biomedical and Environmental Sciences,2005
3. Health effects and economic impacts of fine particle pollution in Washington. Air Quality Program, Department of Ecology, State of Washington, 15 December 2009. (https://fortress.wa.gov/ecy/publications/publications/0902021.pdf)
4. Surface heat budget on green roof and high reflection roof for mitigation of urban heat island;Takebayashi;Building and Environment,2007
5. Positive effects of vegetation: Urban heat island and green roofs;Susca;Environmental Pollution,2011