https://io9.gizmodo.com/5148637/10-tips-for-surviving-the-zombie-apocalypse
http://time.com/money/4068590/zombie-apocalypse-survival-kit/
http://all-that-is-interesting.com/survive-zombie-apocalypse
https://www.cdc.gov/phpr/zombie/index.htm
https://www.cnbc.com/2014/06/04/practical-reasons-to-plan-for-a-zombie-apocalypse.html
http://www.dailymail.co.uk/sciencetech/article-3825578/Are-prepared-zombie-apocalypse-Expert-reveals-disaster-strikes.html