TY JOUR TI VIBROACOUSTIC TESTING OF TRIBOUNITS ENDURANCE KW vibrometer KW wear resistance KW friction KW measurement KW sample KW friction machine KW tribounit JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Efremov, L.. AU Tikalov, A.. AU Baeva, L.. PY 2017 IS PB Astrakhan State Technical University