%0 Journal Article %A Doupovec, Miroslav %T Natural transformations between $TTT^*M$ and $TT^*TM$ %J Czechoslovak Mathematical Journal %D 1993 %P 599-613 %V 43 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1993.128434/ %R 10.21136/CMJ.1993.128434 %G en %F 10_21136_CMJ_1993_128434