@article{10_4064_ap_34_1_35_38,
     author = {Marian Kwapisz},
     title = {On the existence and uniqueness of the solution of a non-linear functional equation of r-th order},
     journal = {Annales Polonici Mathematici},
     pages = {35--38},
     publisher = {mathdoc},
     volume = {34},
     number = {1},
     year = {1977},
     doi = {10.4064/ap-34-1-35-38},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-34-1-35-38/}
}