1- https://www.bkd.com/media/COVID-19-response-guide
2- www.global-cities-infectious-disease/607603/
3- https://fa.wikipedia.org/wiki/
4- https://fa.wikipedia.org/wiki/
5- www.worldmeters.com
6- www.worldmeters.com
7- www.nextstrain.org
8- https://www.weforum.org/
9- www.worldmeters.com
10- www.developer.tech.gov.sg
11- https://www.tracetogether.gov.sg
12- www.worldmeters.com
13- Worldmeters.com
14- innovazione.gov.it
15- www.theatlantic.com
16- Worldmeters.com
17- www.aa.com.tr
18- Worldmeters.com
19- COVID pandemic in Germany 2021
20- www.Dw.com
21- www.Reuters.com
22- https://ru.usembassy.gov
23- https://www.thestar.com.my/tech/tech-news/2020/03/19/from-food-totech-COVID-19-to-spur-urban-planning-rethink
24- https://www.brookings.edu/blog/the-avenue/2020/03/25/the-qualities-thatimperil-urban-places-during-COVID-19-are-also-the-keys-to-recovery/
25- https://www.citylab.com/design/2020/03/coronavirus-urban-planning-
26- Front. Sustain. Cities, 14 June 2021 https://doi.org/10.3389/frsc.2021.668263
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