%0 Journal Article %T The legal nature and classification of transactions in Russian civil law %A Demchenko, I.A. %A Kulkina, I.V. %A Zakalyapin, D.V. %K civil law; transaction; legal nature; classification of transactions; contract; invalidity of the transaction; void and disputed transactions; civil turnover %J Journal of Applied Research %D 2026 %N %P 0 %I ITBO University