@article{10_4064_ap_68_2_165_175,
     author = {Maciej Sablik},
     title = {The law of large numbers and a functional equation},
     journal = {Annales Polonici Mathematici},
     pages = {165--175},
     publisher = {mathdoc},
     volume = {68},
     number = {2},
     year = {1998},
     doi = {10.4064/ap-68-2-165-175},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-68-2-165-175/}
}