TY JOUR TI CONSTITUTIONAL LEGAL PROCEEDINGS AS FORM OF PROTECTION OF THE RIGHT FOR PROVISION OF PENSIONS KW social security KW pension reform KW labor pension KW social pension KW constitutional complaint KW Constitutional Court of the Russian Federation JO Volgograd Academy of the Ministry of the Interior of Russia AU , .. AU , .. PY 2016 IS PB Volgograd Academy of the Ministry of Internal Affairs of Russia