https://www.kommersant.ru/doc/3689128
https://www.gazeta.ru/business/2018/07/17/11855425.shtml
An increase in the retirement age blamed for drop in approval ratings for Russian president
https://ru.krymr.com/a/29359109.html
http://www.ng.ru/economics/2018-07-16/4_7267_nalog.html
https://www.kommersant.ru/doc/3681640
https://www.kommersant.ru/doc/3687845
http://expert.ru/expert/2018/29/pridetsya-zhit-dolgo/
https://www.rbc.ru/newspaper/2018/07/16/5b48b3c79a7947727b7d72ce