%0 Journal Article %A A. K. Rybnikov %T B\"acklund maps and Lie--B\"acklund transformations as differential-geometric structures %J Fundamentalʹnaâ i prikladnaâ matematika %D 2010 %P 135-150 %V 16 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2010_16_1_a10/ %G ru %F FPM_2010_16_1_a10