TY JOUR TI Assessment of the Possibility of Using the “Ship-or-Pay” Mechanism to Finance Substage 3.1 of the Modernization of the Eastern Polygon KW Ship-or-pay mechanism KW railway infrastructure KW financing KW modernization KW Eastern polygon KW forecast JO Bulletin of scientific research results AU Egorov, Y.V. PY 2023 IS 2023 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"