@article{PIM_1970_N_S_10_24_a9,
     author = {Veljko A. Vuji\v{c}i\'c},
     title = {Conditions {De} {Non-Existence} {De} {Trajectories} {De} {Phase} {Ferm\'ees} {D'Un} {Syst\`eme} {De} {Points} {Mat\'erieles}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {79 },
     publisher = {mathdoc},
     volume = {_N_S_10},
     number = {24},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/PIM_1970_N_S_10_24_a9/}
}