@article{NSJOM_2008_38_2a_4,
     author = {O. Demirel and E.

 Soyt\"urk},
     title = {The hyperbolic {Carnot} theorem in the {Poincar\'{e}} disc

 model of hyperbolic geometry},
     journal = {Novi Sad Journal of Mathematics},
     pages = {33-39},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {2008},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2008_38_2a_4/}
}