%0 Journal Article %A Mikulski, Włodzimierz M. %T There exists a prolongation functor of infinite order %J Časopis pro pěstování matematiky %D 1989 %P 57-59 %V 114 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1989.118368/ %R 10.21136/CPM.1989.118368 %G en %F 10_21136_CPM_1989_118368