TY JOUR TI The use of special knowledge in the detection and proof of tax crimes KW schemes of commission of tax crimes KW formally legitimate organizations KW tax expertise KW tax audit KW consulting activity of a specialist-economist KW document research KW calculation of the share of unpaid taxes JO Legal Science and Practice: Journal of Nizhny Novgorod Academy of the Ministry of Internal Affairs of Russia AU Voronov, S.S. AU Golubyatnykov, S.P. PY 2019 IS 2019 PB Nizhny Novgorod Academy of the Ministry of the Interior of Russia