00621naa#a2200193#i#450# EN\\bibl\2820 20240511103848.6 2308-8877 20140616b2014####ek#y0engy0150####ca RUS RU About smooth solutions of the euler differential equation Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 2 с. Journal article local Sapronov Ivan Zyukin V. Utochkina Elena naukaru.ru