%0 Journal Article %A Ammar Alsaedy %A Nikolai Tarkhanov %T A degree theory for Lagrangian boundary value problems %J Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika %D 2020 %P 5-25 %V 13 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JSFU_2020_13_1_a0/ %G en %F JSFU_2020_13_1_a0