TY JOUR TI THE MATHEMATICAL DEFINITION OF TRAWL DOOR FOR NUMERIC SIMULATION DYNAMICS OF MID-WATER TRAWL SYSTEM KW mid-water trawl system KW trawl door KW mathematical model KW alternating direction implicit method KW mass-points KW graphics processor KW computer program JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Nedostup, A.. AU Razhev, A.. PY 2017 IS 2017 PB Astrakhan State Technical University