References

  • Bureau of Economic Analysis (BEA), Regional GDP and Personal Income, https://apps.bea.gov/itable/iTable.cfm ReqID=70step=1 (accessed Apr 2020)

  • Dick, E. C., L. C. Jennings, K. A. Mink, C. D. Wartgow, and S. L. Inborn (1987). Aerosol transmission of rhinovirus colds. Journal of Infectious Diseases 156 (3), 442–448.