TY JOUR TI Knowledge management methods in next-generation E/U Learning systems KW knowledge management KW e-learning KW E/U Learning 3.0 KW system of distance education KW variability model KW service-oriented architecture KW DSPL KW intelligent software agents JO Russian Journal of Management AU Bozhday, A.. AU Bershadskiy, A.. AU Mkrtchan, V.. PY 2015 IS 3 PB Publishing Center RIOR