https://www.gazeta.ru/social/2018/12/17/12097393.shtml
http://www.rosbalt.ru/moscow/2018/12/17/1753521.html
https://www.kommersant.ru/doc/3828355
Is US Army Artillery progressing toward being able to outrange and outgun Russian and Chinese weapons
https://www.gazeta.ru/politics/2018/12/10_a_12090481.shtml
https://www.rbc.ru/newspaper/2018/12/11/5c0e3ba59a7947205c50c67d
https://www.rbc.ru/newspaper/2018/12/11/5c09419b9a7947781ad3fa28
https://www.gazeta.ru/army/2018/12/08/12087709.shtml