TY JOUR TI Stratification of lubricating material in radial bearings KW radial bearing KW double-layer lubricant KW axial lubricant feed KW viscosity-pressure relation KW bearing capacity KW friction force KW stream functions KW self-similar solution JO Vestnik of Don State Technical University AU Mukutadze, M.. PY 2015 IS 15 PB Don state technical University