@article{10_4064_ap_34_1_85_95,
     author = {M. Kwapisz and J. Turo},
     title = {On some class of non-linear functional equations},
     journal = {Annales Polonici Mathematici},
     pages = {85--95},
     publisher = {mathdoc},
     volume = {34},
     number = {1},
     year = {1977},
     doi = {10.4064/ap-34-1-85-95},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-34-1-85-95/}
}