%0 Journal Article %A O. V. Kaptsov %T Algebraic and geometric structures of analytic partial differential equations %J Teoretičeskaâ i matematičeskaâ fizika %D 2016 %P 219-238 %V 189 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2016_189_2_a4/ %G ru %F TMF_2016_189_2_a4