@article{10_4064_ap_31_2_145_157,
     author = {M. Kwapisz and J. Turo},
     title = {Existence and uniqueness of solutions of non-linear functional equations of r-th order},
     journal = {Annales Polonici Mathematici},
     pages = {145--157},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {1975},
     doi = {10.4064/ap-31-2-145-157},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-31-2-145-157/}
}