@article{ZR_1953_Knj_3_1_a7,
     author = {Mahmud Bajraktarevi\'c},
     title = {Sur {Les} {Suites} {D\'efinies} par {l'\'Equation}   $$x_u=\varepsilon_0f(\varepsilon_1f(...(\varepsilon_u f(0))...))$$},
     journal = {Zbornik radova},
     pages = {61 - 74},
     publisher = {mathdoc},
     volume = {Knj. 3},
     number = {1},
     year = {1953},
     url = {http://geodesic.mathdoc.fr/item/ZR_1953_Knj_3_1_a7/}
}