@article{10_4064_ap_37_2_113_117,
     author = {J. A. Lester},
     title = {The solution of a system of quadratic functional equations},
     journal = {Annales Polonici Mathematici},
     pages = {113--117},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {1980},
     doi = {10.4064/ap-37-2-113-117},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-37-2-113-117/}
}