TY JOUR TI PENSION REFORM AS THE IMPLEMENTATION OF A UNIFIED MODEL OF PENSION PROVISION: COMPARATIVE ANALYSIS KW pension provision KW population KW state KW financial KW political and ideological interests KW world Bank KW tax benefits KW economic downturn KW annuity KW age categories of able-bodied citizens KW the principle of solidarity JO Advances in Law Studies AU Sigalov, K.E. AU Rodionova, O.V. PY 2019 IS 7 PB Publishing Center RIOR