%0 Journal Article %A Ivan At. Badev %T Isogeodesic and Isochebyshevian Nets in a Three-Dimensional Affinely Connected Space without a Torsion %J Mathematica balkanica %D 2003 %P 199 %V 17 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2003_17_3-4_a1/ %F MABA_2003_17_3-4_a1