%0 Journal Article %A Oleg V. Kaptsov %T Intermediate systems and higher-order differential constraints %J Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika %D 2018 %P 550-560 %V 11 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/JSFU_2018_11_5_a1/ %G en %F JSFU_2018_11_5_a1