00571naa#a2200169#i#4500001001400000005001700014011001400031100004100045101000800086102000700094200009200101210013700193215001000330608002700340700002000367856001400387EN\\bibl\321620251221164436.7##a2308-8877##a20140617b2014####ek#y0engy0150####ca0#aRUS##aRU1#aOn calculation of rotation of vector fields using the formula POINCAREeJournal article1#aVoronezhcFSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozovd2014##a0 с.##aJournal article2local#1aTsymbalovagO. 4#azh-szf.ru