@article{MABA_2003_17_3-4_a1,
     author = {Ivan At. Badev},
     title = {Isogeodesic and {Isochebyshevian} {Nets} in a {Three-Dimensional} {Affinely} {Connected} {Space} without a {Torsion}},
     journal = {Mathematica balkanica},
     pages = {199},
     publisher = {mathdoc},
     volume = {17},
     number = {3-4},
     year = {2003},
     url = {http://geodesic.mathdoc.fr/item/MABA_2003_17_3-4_a1/}
}