TY JOUR TI Economic efficiency of development of ship shafting diagnosis system KW ship shafting KW shafting vibrations KW diagnostic system KW economic efficiency KW business modeling JO Vestnik of Astrakhan State Technical University. Series: Economics AU Kushner, G.. AU Ruban, A.. AU Gavrilova, O.. AU Shendo, M.. PY 2022 IS PB Astrakhan State Technical University