%0 Journal Article %A A. Serbetchi %T On the Liftings to the Sheaf of Triad Homotopy Groups %J Mathematica balkanica %D 2000 %P 209 %V 14 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2000_14_3-4_a1/ %F MABA_2000_14_3-4_a1