TY JOUR TI To the question about the use of provisional principles of financial law KW tax law KW discretionary method KW financial law KW Tax code of the Russian Federation KW Budget code of the Russian Federation JO Legal Science and Practice: Journal of Nizhny Novgorod Academy of the Ministry of Internal Affairs of Russia AU Kurdyuk, P.M. AU Ochakovskii, V.A. PY 2019 IS 2019 PB Nizhny Novgorod Academy of the Ministry of the Interior of Russia