@article{AM2_1983__26_136987,
     author = {John A. Baker and B.E. Wilder},
     title = {Constructing means on certain continua and functional equations.},
     journal = {Aequationes mathematicae},
     pages = {89--103},
     year = {1983},
     volume = {26},
     zbl = {0536.39005},
     url = {http://geodesic.mathdoc.fr/item/AM2_1983__26_136987/}
}