TY JOUR TI THE PRODUCTION OF NETTLE AND BIRCH LEAVES EXTRACTS IN THE VIBRATION DEVICE KW Vibration device KW extraction KW optimization KW nettle leaves KW birch leaves JO Food Processing: Techniques and Technology AU Savenko, A.. AU Sorokopud, A.F. AU Gricenko, V.. PY 2015 IS 38 PB Kemerovo State University