%0 Journal Article %A Mikulski, W. M. %T Non-existence of natural operators transforming connections on $Y \to M$ into connections on $FY\to Y$ %J Archivum mathematicum %D 2005 %P 1-4 %V 41 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_2005__41_1_a0/ %G en %F ARM_2005__41_1_a0