TY JOUR TI Comparative evaluation of efficiency and justification of choosing option of cargo handling in port KW variant of transshipment KW direct scheme KW optimal variant KW costs KW labor efficiency KW economic efficiency JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Val'kova, S.S. AU Stepanets, V.. AU Kiseleva, E.. PY 2021 IS PB Astrakhan State Technical University