%0 Journal Article %A Chrastina, Jan %T A double complex related with a system of partial differential equations. I %J Archivum mathematicum %D 1983 %P 83-97 %V 19 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1983__19_2_a3/ %G en %F ARM_1983__19_2_a3