TY JOUR TI Constitutional purposes in the CIS countries KW constitutional purpose KW mission KW constitution KW CIS members KW constitutional reform JO Legal Science and Practice: Journal of Nizhny Novgorod Academy of the Ministry of Internal Affairs of Russia AU Dubinina, A.A. AU Rusakov, M.I. PY 2020 IS 2020 PB Nizhny Novgorod Academy of the Ministry of the Interior of Russia