@article{MABA_2000_14_3-4_a1,
     author = {A. Serbetchi},
     title = {On the {Liftings} to the {Sheaf} of {Triad} {Homotopy} {Groups}},
     journal = {Mathematica balkanica},
     pages = {209},
     publisher = {mathdoc},
     volume = {14},
     number = {3-4},
     year = {2000},
     url = {http://geodesic.mathdoc.fr/item/MABA_2000_14_3-4_a1/}
}