00564naa#a2200169#i#450# EN\\bibl\3212 20250428124011.1 2308-8877 20140617b2014####ek#y0engy0150####ca RUS RU Correlation between degree of a map and rotation of vector fields Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 0 с. Journal article local Rusinova A. zh-szf.ru