%0 Journal Article %A Vondra, Jan %T Classification of principal connections naturally induced on $W^2PE$ %J Archivum mathematicum %D 2008 %P 535-547 %V 44 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_2008__44_5_a13/ %G en %F ARM_2008__44_5_a13