@article{ZR_1953_Knj_3_1_a14,
     author = {Vojislav G. Avakumovi\'c},
     title = {\"Uber die scheitel der {Geschlossenen} {Kurven}},
     journal = {Zbornik radova},
     pages = {147 - 152},
     publisher = {mathdoc},
     volume = {Knj. 3},
     number = {1},
     year = {1953},
     url = {http://geodesic.mathdoc.fr/item/ZR_1953_Knj_3_1_a14/}
}