@article{10_4064_ap_43_3_305_316,
     author = {Karol Baron},
     title = {On approximate solutions of a system of functional equations},
     journal = {Annales Polonici Mathematici},
     pages = {305--316},
     publisher = {mathdoc},
     volume = {43},
     number = {3},
     year = {1983},
     doi = {10.4064/ap-43-3-305-316},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-43-3-305-316/}
}