%0 Journal Article %A I. S. Grebenyuk %A A. E. Ordanovich %T Free flight of ``a kyte'' with a land air brake in a gradient flow %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1990 %P 62-66 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1990_3_a12/ %G ru %F VMUMM_1990_3_a12