https://www.rbc.ru/newspaper/2019/06/07/5cf7bf0a9a794750016d37e2
https://www.svoboda.org/a/29984520.html
https://www.vedomosti.ru/opinion/articles/2019/06/05/803351-rabota-pensionerov
https://www.svoboda.org/a/29978849.html
https://www.rbc.ru/newspaper/2019/06/03/5cefa4189a794722a4e74ca3
http://www.kasparov.ru/material.php?id=5CF3C45F9925D
https://www.gazeta.ru/science/2019/06/02_a_12389503.shtml