TY JOUR TI Principles of efficiency estimation technique of machine-process units based on the fifth-generation mobile utilities KW technique KW criterion KW technical and economic efficiency KW design KW MPU KW machine-process unit KW multipurpose unit KW economic-mathematical model KW process operations KW criterion of novelty. JO Vestnik of Don State Technical University AU Lipkovich, E.. AU Shchirov, V.. PY 2013 IS 13 PB Don state technical University