@article{10_4153_CMB_1973_072_7,
     author = {Haruki, Shigeru},
     title = {A {Note} on a {Square} {Type} {Functional} {Equation}},
     journal = {Canadian mathematical bulletin},
     pages = {443--445},
     year = {1973},
     volume = {16},
     number = {3},
     doi = {10.4153/CMB-1973-072-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1973-072-7/}
}