@article{GDZPPN002030152, title = {The matrix equation a(x...y) = a(x) + a(x)a(y) + a(y).}, journal = {Aequationes mathematicae}, volume = {15}, year = {1977}, pages = {213-224}, zbl = {0359.39002}, url = {http://dml.mathdoc.fr/item/GDZPPN002030152} }
McKiernan, M.A. The matrix equation a(x...y) = a(x) + a(x)a(y) + a(y).. Aequationes mathematicae, Tome 15 (1977) pp. 213-224. http://gdmltest.u-ga.fr/item/GDZPPN002030152/