@article{PIM_1966_N_S_06_20_a0,
     author = {Octavian Em. Gheorghiu},
     title = {Sur {Une} {Equation} {Fonctionnelle} {Cyclique} {Non} {Lineaire}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {5 },
     publisher = {mathdoc},
     volume = {_N_S_06},
     number = {20},
     year = {1966},
     url = {http://geodesic.mathdoc.fr/item/PIM_1966_N_S_06_20_a0/}
}