@article{10_4064_ap_15_2_117_141,
     author = {B. Choczewski},
     title = {Investigation of the existence and uniqueness of differentiable solutions of a functional equation},
     journal = {Annales Polonici Mathematici},
     pages = {117--141},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {1964},
     doi = {10.4064/ap-15-2-117-141},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-15-2-117-141/}
}