TY JOUR TI THE METHODS OF THE TAX POTENTIAL CALCULATION IN THE ASTRAKHAN REGION KW tax potential KW actual method of calculation KW method of gross regional product KW method of representative tax system KW tax base KW method of correction coefficients KW rate of inflation KW unemployment rate KW ratio of bankruptcy KW shadow economy JO Vestnik of Astrakhan State Technical University. Series: Economics AU Shamanin, V.. PY 2016 IS PB Astrakhan State Technical University